Test Equipment

1. The instrument consists of an electrolytic rod with positive and negative electrodes (one is an iron rod and the other is an aluminum rod), and two electrodes are used as electric field introduction. After electrolysis, the positive Fe3+ ions are dissolved under the action of electric current. They will combine with the negative OH-ions in the water to form water-insoluble Fe (OH) 3 particles. These particles have strong agglomeration and adsorption activity to colloidal particles in water, thereby forming an adsorption and agglomeration process for organic or inorganic substances in water.At the same time, due to the action of the electric current, the originally dissolved metal particles, such as manganese, potassium, cobalt, etc., are reduced and gradually aggregate to form metal clusters, resulting in the color separation of different metal ions. .After electrolysis, different colors of water show various impurities in the water.2. Color identification:- Yellow: Dissolved acids, silicon compounds, organic minerals, molybdenum, silicon, fluoride and other organic substances.- Green: arsenic, mercury, lead, copper and sodium.- Blue: bacteria, viruses, carcinogens, organic phosphorus, etc. (fertilizers, detergents and pesticides)- Red: iron, rust and bacteria- White: lead, zinc, mercury, inorganic salt dirt.- Black: heavy metals (zinc, lead, copper, chromium, manganese, cadmium)3. Material: ABS+ aluminum iron4. Measuring range: 50 to -200 mg/L.5. Rated voltage: 220V/50Hz6. Application: domestic drinking water, water purifier testing.7. Note: The electrolyzer can only prove the presence or absence of impurities, not the quality of the waterPacking list:1 x Electrolyzer body2 x aluminum rod2 x iron rod

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1. Data hold 2. Full overload protection 3. Low battery display 4. Backlight 5. Lead socket for small parts 6. Zero adjustment 7. LCD size: 45mm x 20mm 8. Product size:138 x 69 x 31 mm 9. Product Net weight: 170g 10. Battery:(9V included) 11. Max display:1999 12. Sampling rate 2~3 sec each sample

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1. The tool has wide measurement range from 1.20 ~ 225.00 mm (0.047 ~ 8.86 inch) with accurate measurements. Moreover, the meter has ultrasonic wave velocity measurement function from 1000 m/s to 9999 m/s. 2. This unit is widely used in various precise measurements for different hardware / parts in industrial realm. One of its important applications is to monitor the level of thickness decreasing during operation of various and pressure container. 3. It is diffusely applied in manufacture fields, metal processing and commercial inspection. This product can be applied for the material that conduct and reflect constant sonic velocity 4. Auto Calibration to assure the accuracy 5. Auto linear compensation: this advanced software program enhances the precision by correcting the non-linear accuracy of transducer 6. Use "up" and "down" keys to make a quick adjustment for the sound velocity/thickness and a quick recall to the stored data 7. Coupling status indication: Observing the coupling icon to learn if the coupling is accomplished or not 8. 10 thickness measurement storage and recall function available, which facilitated the height work or working in wild area 9. Sound velocity measurement: with a given thickness by a sample hardware to measure the sound velocity, which avoid the further conversion or consultation of the table 10. 12 sound velocity for different material which also adjustable 11. Low battery indication 12. Auto power off mode designed to conserve battery life 13. More than 10000 times long life keys 14. The unit has a special memory that retains all of its setting even when the power is off 15. LCD Digital display: 4 digits 16. Minimum display unit: 0.1 mm 17. Working frequency: 5 MHz 18. Measurement Range: 1.2 ~ 225.0 mm (Steel) 19. Minimum limit for Tubes measurement: 20mm x 3mm (Steel) 20. Note: couplant (Not included) 21. Sound Velocity Range: 1000 ~ 9999 m/s 22. Measuring Sound Velocity with a given thickness - Measuring Range: 1000 ~ 9999 m/s 23. Operating Temperature: 0 ~ 40 degree centigrade 24. Power supply: 3 x 1.5 AAA Alkaline Batteries (Not included) 25. Size: 150x76x30mm

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Technical features:1. Dot matrix backlit LCD display2. Automatic temperature compensation, fast response time3. Portable and easy to carry4. Equipped with our own dissolved oxygen electrode (polarographic type coated type)Main Specifications:1. Measuring range: Dissolved oxygen: (0.0～20.0) mg/L, temperature: (0-40) degrees Celsius2. Basic error: Dissolved oxygen: ±0.01mg/L, temperature: ±1°C3. Residual current: not more than 0.15mg/L4. Response time: no more than 30s (90% response at 20 degrees Celsius)5. Range of automatic temperature compensation: (0-40) degrees Celsius6. Adopt 1.5V LR44 button battery x 4 (not included in delivery)7. Dimensions: 4×18.5 cm8. Weight: 88 gramsPacking list:1. Host x12. One meter wire dissolved oxygen electrode x13. Electrode membrane cover x34. Empty bottle spare x15. Certificate of conformity x16. Warranty card x17. Manual x1

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1. Color screen display, humanized interface 2. Bilingual options: Chinese/English 3. Three types of alarms: sound/light/vibration 4. Data recording and viewing function, continuous recording of 120,000 pieces of data 5. Using high-quality gas sensor, safe and reliable, accurate measurement, stable performance 6. It has excellent sensitivity and repeatability, easy to use and maintain, and meets the requirements for high reliability of equipment in industrial field safety monitoring 7. The shell is made of high-strength engineering plastics and composite non-slip rubber, dust-proof and explosion-proof, high strength, and smooth hand feeling 8. Measuring range: 0-30%VOL 9. Resolution: 0.1 10. Response time (90%): less than 30 seconds 11. Working voltage: DC 3.7V (lithium battery capacity 1800mAh) 12. Battery model: LP103450-1800mAh 13. Charging time: 6-8h 14. Standby time: more than 8 hours (with slight changes in working status) 15. Size: 71x153x49mm 16. Weight: about 215.4g

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1. Display form: LCD2. Formaldehyde detection range: 0-1.999 mg/m33. TVOC detection range: 0-9.999 mg/m34. TVOC effectors: Benzene, alkanes, alkenes, ketones, etc.5. Temperature detection range: 0-50 degrees Celsius6. Moderate detection range: 20-90%RH7. Built-in battery: 1200mAh lithium battery8. Charging time: About 4 hours9. Battery life: About 2 hours10. USB interface: Type-C interface11. Input: 5V/1A12. Specifications: English version13. Dimensions: 15.1x6.9x4.5 cm

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About the product1. Radiation survey meter can test electric field radiation and magnetic field emission to reach the optimal test result. 2. It is used to test and learn electromagnetic radiation situation indoor and outdoor. 3. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on LCD digital display after processing by the control micro-chip. 4. You can make reasonable processing or taking effective prevention measures toward the electromagnetic radiation according to the test resultFeatures1. One instrument with two uses, it can test the electric field and the magnetic field radiation at the same time 2. Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically 3. Data locking, one-key lock of the radiation value 4. LCD graphic display of the radiation value trend 5. Radiation assessment, remind you whether the radiation value is safe or not 6. Fashionable design, easy on-hand operation, it is easy to move or make field measurementRange of Application1. Electromagnetic radiation monitoring: House and apartment, office, outdoor and industrial site 2. Electromagnetic radiation test: Mobile phone, computer, TV set, refrigerator and high voltage cable radiation test 3. Radiation protection product test: Test effects of radiation-proof clothes, radiation-proof film and other prevention articles

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1. Measuring range: 2%~30%2. Resolution: 0.5%3. Ambient temperature: -10-60 degrees Celsius4. Operating temperature: -10-40 degrees Celsius5. Operating humidity: 0-70%Rh6. Automatic reading lock function7. Automatically display low voltage prompt symbol8. Power supply: 9V battery (not included in delivery)9. Dimensions: host: 17.4x7.3x3.8 cm, probe: 36.5x4.3x2.5 cm10. Using microcomputer technology (CPU) to make the measurement more accurate11. With automatic temperature compensation function12. The large-screen LCD display with backlighting ensures clear readings and no parallax13. There is a dedicated backlight control switch, which is convenient for saving battery14. Food types that can be tested: wheat, rice, rice, corn, soybeans, coffee beans, medicinal materials

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1. Use high-brightness LD red laser source, low energy consumption, horizontal and vertical measurement at the same time, multi-grid strong light spots are clearly gathered, strong penetrating power, and the distance is still clear no matter how far away 2. Surface anodized + fine sandblasting, creating excellent metal texture 3. The screen adopts ultra-wide double-sided LED color screen, high-definition smooth and smooth surface, measurement response per second, real-time data display 4. Light weight, small size, easy to carry 5. Using reinforced anti-drop metal shell, not easy to break, durable 6. The combination of revolutionary technology based on micro-electromechanical system and advanced software technology realizes high-precision measurement with an accuracy better than +/-0.5 degrees 7. Equipped with an adjustable bracket to move the body in multiple directions, greatly improving work efficiency Parameter: 1. Charging port: Type-C 2. Laser wavelength: 660nm 3. Laser class: Class 2 4. Degree of protection: IP54 5. Indoor distance: about 10 meters 6. Battery capacity: 730mah 7. Working mode: absolute angle + relative angle 8. Size: 120x20x35mm, bracket size: 95x103mm 9. Weight: 95g

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1. LED digital display2. Intelligent alarm system3. Greenhouse compensation calibration4. LCD screen + backlight mode5. Multiple detection, stable and reliable6. Built-in 1200 mAh lithium battery7. Charging interface: Type-c 5V8. The large screen displays power, CO2, temperature and humidity9. 1S/time real-time refresh, fast detection can obtain more stable measurement values10. Application areas: agricultural planting, greenhouse fruits, warehouses, raw material processing11. Press and hold the power button for 3 seconds to turn on or off, and automatically detect the surrounding environment after turning on12. Using semiconductor sensors to calculate the carbon dioxide concentration, stable performance, low consumption and long service life13. Voltage: 2.0V14. Size: 9x7x3.5cm15. Weight: 0.105kg

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Parameter:1. Material: ABS+Silicone2. AC voltage: 0-750V3. DC voltage: 0-1000V4. AC current: 0-10A5. DC current: 0-10A6. Resistance: 0-60 milliohms7. Capacitance: 0nF-100mF8. Temperature: -40~1000 degrees Celsius / -40~1832 degrees Fahrenheit9. Hertz: 0-999.9kHz10. Count: 6000 count11. Built-in battery: 3.7V 1200mAh lithium battery12. Dimensions: 150.8x74.8x23.8mmDescribe:1. Multi-function tester, including AC and DC voltage, AC and DC current, resistance, capacitance, temperature, frequency, diode, on-off, zero live wire and other measurement functions2. Large 5-inch LCD digital display with backlight, 6000 counts3. The display has a data hold function, and the measured value can be read clearly even in a dark environment4. Intelligent anti-burning, built-in fuse, all-round anti-burning protection, not afraid of damaging the components of the multimeter5. NCV non-contact induction, when detecting nearby AC voltage, it will flash red light and sound an alarm6. Built-in rechargeable lithium battery, no need to buy and replace the battery again, equipped with a type-C data cable for charging, safer and more convenient7. Silicone protective case, wrapped in a silicone protective case, effectively prevents drops, protects the multimeter from damage, shockproof and scratch-resistant

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1. It is widely used in gas pipeline leak detection, household gas prevention, gold mine field, tunnel mine operation oil and gas exploitation field, dangerous goods storage warehouse, etc. 2. It is convenient for users to safely detect various combustible gases, such as methane, carbon monoxide, gasoline, ethylene oxide, etc. 3. Range: 0-1000PPM 4. Accuracy: less than or equal to 10% FS (methane) 5. Sensitivity: less than 50PPM (methane) 6. Response time: less than 2s 7. Preheating time: about 30s

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1. Zero point calibration and multi-point calibration2. Self-calibration accuracy measurement3. High sensitivity probe4. Wide range of applications, automotive work, industrial production, mechanical processing, equipment production, etc.5. High definition display6. Anti-slip groove design7. Measurement range: 0.05-2.00mm8. Display mode: electronic digital display9. Power supply voltage: 3V10. Power supply: 2 sections of 1.5V AAA batteries (not included)11. Size: 12.2 x 5 x 2.2cm

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Features Color-screen display, user-friendly interface.Bilingual choices:Chinese/English.Three alarm forms:sound/light/vibration .Data recording and review function, continuously record120,000 data logging.Charging function. Specification Test Gases: H2S Display Unit: %LEL Gas detection:EXMeasurement Range: 0~100μmo/molResolution: 0.1 Accuracy: ≤ ±5%FSIndication model:LCD display real-time date and system state,LED,sound,vibration indication alarm Response Time(90%): Less than 30 seconds Alarm: Sound and light vibration alarm Alarm Point: Adjustable Working Voltage: DC3.7V, 1800mAh Battery Model: LP103450-1800mAh rechargeable lithium batteryExplosion-proof Certificate NO.: CNEx 18.5122Explosion-proof Mark: Ex ib IIB T3 GbOperating Conditions: -20～50℃ / -4～122℉, < 95%Storage Conditions: -10～55℃ / 14～122℉, < 85%charging time:6-8hstandby time:more than 8h on end (slightly change with working state)Weight: 215.4g(with battery and back buuton)Item Size: 71 * 153* 49mm Package included 1 * Hydrogen Sulfide Monitor1 * Plastic Pipe1 * USB Cable1 * Gas Calibration Cover1 * Storage Box1 * User Manual

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1. Measurement range: 0.5-19999, accuracy: 0.05% +1 2. Maximum, minimum, average, last measured value retention, memory function 3. LCD backlight display 4. Automatic / manual shutdown 5. Low battery prompt 6. Good quality and long service life

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Product parameters: 1. Size: 43x43x12.5mm. 2. LCD display size: 28x28mm. 3. Material: ABS, PMMA. 4. Voltage: DC 2.5V-3V. 5. Battery: CR2032. 6. Wireless connection: Bluetooth 4.2 BLE. 7. Measuring range: 0-60 degrees Celsius. 8. Resolution: 0.1 degrees Celsius. 9. Humidity range: 0% -99% RH. 10. Resolution: 1% RH. Packing list: Bluetooth Thermo Hygrometer 2 x 1 Wall sticker x 1 Manual x 1

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1. The high linear scales is designed, high , stable and accurate. 2. The signal line adopts multi-layer isolation steel and metal soft shell protection, waterproof and anti-interference fine. 3. Easy to install and maintain, waterproof, dust-proof good, long service life. 4. Widely used, high stabilization, capacity of resisting disturbance well. 5. Suitable for JCS900-2AE / JCS900-3AE data display instrument. 6. Material: metal 7. Accuracy: +-5um 8. Resolution: 5um 9. Measuring Range: 0mm-700mm

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About the product1. The electrical compensation function provide the compensation to the thermocouple error so as to improve the overall precision 2. To measure the thermocouple of J, K,T,E,N and R type. 3. Unit Celsius and fahrenheit unit 4. Human centered design, easy operation 5. Measuring Range: J-type: -210C to 1200C (-346F to 2192F) K-type: -200C to 1372C (-328F to 2501F) T-type: -250C to 400C (-418F to 752F) E-type: -150C to 1000C (-238F to 1832F) N-type: -200C to 1300C (-328F to 2372F) R-type: 0C to 1767C (32F to 3212F) 6. Resolution: 0.1C/F<1000Degree; 1.0C/=<1000Degree 7. Electrical compensation 8. C/F Switch

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1. Measuring: Air Velocity & Air Temperature & Air Volume 2. Measuring range: Air velocity, 0-30m/s; Air temperature, 0 - 45C, 32 - 113F; Air volume, 0-999900m3/min 3. Resolution: 0.001m/s, 0.1C 4. Unit of Velocity: m/s, Ft/min, Knots, Km/hr, Mph 5. C/F Selection 6. Air temperature measuring accuracy: +-2C 7. Air velocity measuring accuracy: +-3%+-0.1dgts 8. Max/Min reading 9. Average/Current reading 10. Data hold 11. Backlight display 12. Low battery indication 13. Manual/Auto power shut off 14. USB Interface and cable

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1. Display: LCD Digital 2. Lightweight pocket size kit set, easy to carry & store. 3. Simple & easy operation - Simply turn it on, remove the protective cap and immerse the electrode into the solution to be measured 4. Instant, quick display of results 5. A perfect tool for testing the acidity or alkalinity of liquids, ideal for all home and laboratory pH testing applications including aquariums, hydroponics, swimming pools, etc.

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1) Quick test of water pH and Cl2 levels 2) Chlorine calibration for more accurate testing 3) No adjustment needed for pH testing 4) Simple and easy to operate 5) Get results instantly 6) Light weight and handy 7) No chemical testing and solutions needed 8) Recommended chlorine level for pools and spa is 1.2 to 1.7ppm 9) Recommended pH level for pools and spa is 7.2 to 7.8 10) Dimension: -Main unit: 190 x 120mm -Probe with handle: 150mm long -Probe (only): 48mm long (not included black band) -Cable length: 1.2m 11) Power supply: 1x AA battery (not included) 12) Weight: 160g

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Features1. Measuring range: Moisture 5%~30%, temperature -10~60C 2. Overflow alert 3. Grain species 4. Moisture standard setup 5. Unit shift between Celsius and Fahrenheit grain moisture meter can fast measurement of moisture content in grain. Multiple allocation, suitable for grain purchase, storage, processing and so on. This machine can measure the temperature of food at the same time, can measure 8 food: Rice wheat and barley feed corn soybean rice rapeseed

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Display Type:Digital With Backlight Or Not:No Model Number:PH Meters Specification: Brand new Total length: approx 5m PH range: 0-14 Feature: With distinct color PH scale for result comparisons. The test strip color changes must be matched with the pH scale color chart within about 15 seconds. Quick and easy to use. Provides reliable and accurate pH readings. Easy to carry. Appropriate for testing alkaline or acid level of any liquid. Great product to have in every lab and at home to measure and inspect water quality, urine, saliva, soil, alkaline diet, aquariums etc. Great for science education. Usage: Take out a test paper. The 2 color blocks all immersed in the liquid. After 1 seconds to take out, in contrast to the color of the color reading value in 30 seconds. Scale Reads From 0 to 14: 0 - 3 indicates a very acidic substance 4 - 6 indicates an acidic substance 7 indicates neutral 8 - 11 indicates alkalinity 12 - 14 indicates a very high level of alkalinityPackage included: 1 x PH Test Paper Note: Can not indicate the Acid or alkali solution when its density was lower than 0.01%. Keep dry for the rest paper. Please allow 0-1cm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.

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1) Test batteries types: **1.5V AAA, AA, HP16, MN2400, R03, HP7, MN1500, UM3, C, HP11, MN1400, SP11, LR14, UM2, D, HP2, MN1300, SP2, R20, UM1 **9V PP3, MN1604, 6F22, 006P 2) Portable and useful 3) Never need to guess the battery level again 4) Three colored indicators give accurate and easy battery power reading 5) Size: 120*7*35mm

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About the productAs one resistance meter for object surface, it can measure the resistance value on object surface by putting two parallel electrodes close to object surface to be measured, so as to judge whether the measured object is a conductor, static material or insulator; meanwhile the meter can be used to measure the resistance to ground of object, which is specially applied to different anti-static fieldsFeatures1. Surface resistance test 2. Three modes to display resistance value on object surface or material property simultaneously 3. Ambient temperature measuring 4. Temperature unit conversion 5. Data holding 6. LCD backlight

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1. Full color screen graphics display2. Infrared decoding, automatic calibration3. Power mode: rechargeable lithium battery4. One-key operation, automatic detection and shutdown, you can also press the multi-function key to turn off the detector5. It can measure triode, diode, resistance, capacitance, inductance, thyristor, field effect tube, voltage regulator tube, double diode, light emitting diode, etc.6. After the detection is completed, point the infrared remote control at the "IR" light and press the button on the remote control. If the detector decodes successfully, the data code and infrared waveform will be displayed7. Place the pin of the component in the corresponding area, and then turn the small handle, the detector will automatically test, and the result will be clearly displayed on the backlit TFT screen8. Display: 3.5 inch TFT screen9. Battery: 0.1-4.5V10. Resistance: 0.01-50Mohms11. Capacitance: 25pF-100mF12. Inductance: 0.01mH-20H13. Diode range: Less than 4.5V14. Triac range: IGT less than 6mA15. Zener diode detection area: 0.01-30V16. Size: 8.8 x 8 x 2.8cm17. Weight: 111.5g

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1. Diamond Selector III is a compact electronic device for distinguishing real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond testing 2. Light weight and ultra-compact (with a size of credit card) 3. LED light and audio result indication 4. Accurate and reliable reading 5. Metal alert 6. Simple calibration for stones of various sizes 7. Convenient carrying case 8. Testing platform for loose stones 9. Testing capability: Diamonds / Diamond simulation (e.g.CZ) / Metal 10. Auto off: N/A 11. Initial warm up: about 20 seconds 12. Indicator: Audio and LED lamps 13. Power supply: 2 X AA batteries (not included) 14. Size: 84 x 53 x 14mm 15. Weight: 40g

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feature1.HOLD data retention2.MAX maximum / MIN minimum3.UN VOL, UNIT switch unit in PPM, (MG / M ^ 3)4. Alarm settings5. Calibration6. On/Off (timed shutdown)Specification1. Measurement range: 0~1000ppm; 0~0.1%VOL; 0~0.8%LEL; 0~1250mg / M ^ 32. Maximum overload: 2000PPM3. Response time: <30 seconds4. Ambient temperature: 0~50°C (32~122°F)5. Use ambient humidity: 15~90% RH Package Included1 x carbon monoxide detector (without battery)1 x manual

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specification1. Measurement range: 0~25% VOL2. Maximum overload: 30% oxygen3. Response time: <15 seconds4. Sensor type: electromagnetic O2 sensor5. Use ambient humidity: 15~90% RH6. Power: 3X1.5VAA battery Package Included1 x Oxgen gas detector (without battery)1 x manual

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Features1. Measure thickness of surface coatings on metal substrates 2. Single/continuous/differential measurement available 3. Zero-point/2-point/basic calibration available 4. Metric and imperial units of measurement optional 5. Powered by 2 x 1.5V AAA batteries (not included) 6. LCD backlight 7. Auto power offSpecifications1. Measuring range: 0 - 1.80mm (0 - 71.0 mil) 2. Resolution: 0.01mm/1mm 3. Measurement error: +-0.03mm 4. Lower diameter of substrate: 50mm 5. Lower thickness of substrate: 0.5mm 6. Operating temperature: 0 - 40 celsius degree 7. Operating humidity: 10% - 95% relative humidity

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Specification1. Movable part: movable coil type 2. Pointer materials: Nickel Silver Strips 3. Pointer color: Black 4. Direction of pointer swing: From left to right 5. Pointer length: 30+/-1mm from the center axis to the end of the needle 6. Pointer width: 0.45 +/- 0.05mm 7. Direction of use: Vertical 8. Operating temperature limit: -10 degree C to + 60 degree C RH 35 to 85% 9. Storage temperature limit: -20 degree C to + 60 degree C RH 35 to 85% 10. Solder condition: Put the terminal about 3 mm into a tin plate with a temperature of 230 degree C. The placement time is 3.5 seconds. After this test, 7-14 items remain normal. 11. Solder temperature: hold the solder gun at 350a?? for 3.5 seconds, and the front end of the terminal is about 3mm in contact with the solder gun. After this test, items 7-14 remain normal. 12. Anti-static: use dry nylon cloth to test the transparent cover surface in the same direction for three times. Mark the pointer difference below 1/3 of the scale length, and return to zero after three seconds. 13. Light bulb specification: DC12V 12W Note: Do not put the meter in direct sunlight, and store the meter in the packing box to prevent foreign matter from entering the meterElectrical Performance1. Standard test conditions: temperature 20 degree C, humidity 70%, no difference in test results, it can also be tested under normal temperature and humidity. 2. Electric influenza degree: Pointer sensitivity 1mA+/- 5% from zero scale to uppper scale (full scale position) 3. Internal impedance: 50ohm+/- 5% 4. Insulation impedance: above 500V DC plus 50M OHm for the charging circuit of the meter outer box. Insulation impedance between the casing of the meter and the charging circuit is tested at 500V DC voltage. 5. Zero position: the meter is in a standard position. The place where the front end of the pointer is integrated with the zero scale center is the reference. The permissible error of the overlap between the pointer and the zero scale is +/-1mm. 6. Equalization: Permissible error range ??±1mm when the standard position of the meter is tilted 90 degrees before and after use. 7. Stick pointer: instantly add three times the full scale current over current, slowly reduce to 1/2 of the electric flu reading, then the pointer will return to 1/3 of the scale. 8. Friction: The error range of indicating point ??±1mm when the electric current is added to the meter and slowly increased or decreased to a certain value. 9. Braking: Instantly add 2/3 of the current of the dial plate, within one second from the beginning to the position indicated by the pointer.Special Test1. Over load test: input ten times the full scale current every five seconds, repeat this action for nine times. Each time is 0.5 seconds, 7 to 14 items remain normal after this test. 2. Vibration test: After the meter is packaged, it is shaken up and down by 4mm every 1,000 times per minute on the vibration plate, 10 minutes in each direction. After this test, 7-14 items remain normal. 3. Impact test: The meter fell from a height of 30cm to a 3cm thick board after being packaged, and the test was conducted in three directions,X.Y.Z, 7-14 items remained normal after this test. 4. Reliability test: Electrofluence limit remains within standard after 100,000 correction point current inputs. 5. Environmental impact test: Temperature 50a??, humidity 85%, lasting 100 hours, after this test 7-14 items remain normal. 6. Terminal tension test: the terminal must bear 1 kg tension, lasting for 60 seconds.

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1. Menu operation and color screen high-definition display. 2. It can quickly, non-destructively and accurately measure the thickness of the non-magnetic coating on the magnetic metal substrate and the thickness of the non-metal coating on the non-magnetic metal substrate. At the same time, it can automatically identify the magnetic metal substrate and the non-magnetic metal substrate. 3. Two measurement methods: single measurement and continuous measurement. 4. Three calibration modes: basic calibration, offset calibration, and zero calibration. Metric/English units and storage function. 5. Screen rotation, charging protection, multi-interface display, screen brightness selection. 6. Widely used in manufacturing, metal processing, chemical, commodity inspection and other testing fields. 7. Support USB and battery power supply. 8. Measuring range: 0-1500um/0-1.5mm/0-59mil 9. Lower limit diameter of magnetic metal substrate: 12mm 10. Lower limit thickness of magnetic metal substrate: 0.5mm 11. The lower limit radius of curvature of the magnetic convex substrate: 2mm 12. The lower limit radius of curvature of the magnetic concave substrate: 11mm 13. Lower limit diameter of non-magnetic metal substrate: 50mm 14. Lower limit thickness of non-magnetic metal substrate: 0.5mm 15. Battery: 3 x 1.2V Ni-MH battery or 5V 1A power adapter 16. Weight: 132g 17. Dimensions: 150 x 65 x 30mm

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1. PMMA lens, increase light transmittance and light input2. 2.4-inch high-definition color screen, collimating focusing lens, dual photosensitive holes3. Electronic universal horizontal bubble, 360-degree accurate positioning4. Photography + dual power supply: small optical system, electronic angle sensor, electronic universal horizontal bubble, camera assisted aiming, live voice broadcast5. Photography + dual power supply + Bluetooth: large optical system, electronic angle sensor, electronic universal horizontal bubble, camera assisted aiming, real voice broadcast, Bluetooth mobile APP6. Camera + video + bluetooth + drawing: large optical system, electronic angle sensor, electronic universal horizontal bubble, camera assisted aiming, Bluetooth mobile APP, dual processor, 4x digital zoom, photo/audio/video, music video playback , 16G storage space, trapezoidal measurement7. Scope of application: distance measurement / area volume measurement / Pythagorean measurement / Bluetooth drawing8. Battery capacity: photography + dual power supply / photography + dual power supply + Bluetooth: 2400mah; camera + video + Bluetooth + drawing: 4800mah9. Power mode: USB charging / built-in lithium battery10. Measurement mode: Length/Area/Volume/Pythagorean/Angle Height/Wall Speed ​​Measurement11. Measuring range: 80 meters, 120 meters, 200 meters12. Charging voltage: DC 5v13. Charging current: 1A14. Charging power: 5w15. Dimensions: photography + dual power supply / photography + dual power supply + Bluetooth: 12.5 x 5.4 x 2.7cm, camera + video + Bluetooth + drawing: 14 x 5.8 x 2.8mm16. Weight: about 160g

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Product Parameters1. Voltage range: AC 95-240V, 50-60Hz 2. Current: 5A 3. Sensor: NCT, 10K 4. Temperature error: +-1 degrees Celsius 5. Time error: less than 1% 6. Temperature control range: 5-35 degrees Celsius 7. Normal working environment temperature/humidity: -10~45 degrees Celsius, 5~95%RH (no water vapor condensation) 8. Power: less than 1.5W 9. Panel material: PC+ABS 10. Install the embedded box: 86mmx86mm/conventional European box 11. Protection class: IP20 12. Button type: capacitive touch button 13. Screen: LCDProduct Features1. LCD display, more friendly interface 2. Touch operation buttons, smoother interaction 3. Ultra-thin embedded panel, fit all kinds of walls 4. Borderless small rounded corner design 5. Compatible with standard 86mm square cassettes and 60mm European cassettes to meet all installation environmentsFunction Features1. Rich function options, Modbus, WiFi, room card, etc., to meet all your needs 2. Strict temperature control accuracy to provide the temperature you want 3. Power off protection, save all your settings safely 4. Provide weather information and humidity display 5. 5+1+1 mode preset adjustment for a week, programmable setting for 6 periods a day, green energy saving, less expenses, more intelligent environmental protection 6. Support the creation of product local groups/shares to achieve unlimited centralized control/multi-terminal control of the number of products 7. Suitable for Tmall Genie, Amazon Echo, Google Home voice control

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1. The D52-2058 rail-type digital display multi-function meter simultaneously displays the measured AC voltage, AC current, power factor, active power, frequency, and electrical energy (electricity) on the meter.2. Please check AC80-300V for measuring 110V 220V voltage, and 200-450V for measuring 380V voltage3. Measurement accuracy: 1% +/- 2 words4. Display: 4-digit red 0.31-inch LED digital tube for voltage display, 5-digit red 0.31-inch LED digital tube for current and frequency display, 5-digit green 0.31-inch LED display for active power and electrical energy (electricity) Digital Tube5. Measurement range: AC voltage: AC80. 0-300. 0V, AC200. 0-450. 0V, AC current: AC0-100. 0A, the current display resolution is 0. 01A when the measurement current is less than 100A, and the measurement current is greater than 0.01A At 100A, the current display resolution is 0.1A, and the range is automatically converted.6. Active power: (measurement voltage AC80. 0-300. 0V) 0.0-30000W (AC200. 0-450. 0V: 45000W)7. Electric energy: 0. 000-99999kwh, decimal point automatic conversion8. Power frequency: 45. 00-65. 00HZ9. Power factor: 1.000-0. 00010. Measurement speed: about 2 times per second11. Weight: 145g12. Installation width: the instrument occupies the 3P air switch position (DZ47/C45)14. Installation method: track type

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1. Mainly used to test various battery voltage, discharge current, discharge power, discharge impedance, internal resistance, capacity, discharge energy, power consumption and running time, and display the measurement data through the LCD screen.2. Voltage:- Measuring range: 0-200V. (When the test voltage is less than 8V, please use the independent power supply method)- Display format: less than 10V display such as: 9.99VBelow 100V such as: 99.9VMore than 100V display such as: 199V- Minimum resolution: 0.01V-Start test voltage: 0.05V- Measurement accuracy: 1%3. Current:- Measuring range: 0-10A (Model: PZEM-013)0-300A (Model: PZEM-015)- Display format: less than 1A display as: 999mALess than 10A is displayed as: 9.99aLess than 100A is displayed as: 99.9AGreater than or equal to 100A is displayed as: 199A- Minimum resolution: 1mA-Initial test current: 10mA (Model: PZEM-013)20mA (Model: PZEM-015)- Measurement accuracy: 1%4. Power:- Measuring range: 0-2000W (Model: PZEM-013)0-60000W (Model: PZEM-015).-Display format: less than 10W display as: 9.99WLess than 100W displayed as: 99.9WLess than 1000W displayed as: 999WLess than 10000W display as: 9.99kWGreater than or equal to 10000W displayed as: 19.9kw- Minimum resolution: 0.01W-Initial test power: 0.1W (Model: PZEM-013)0.2W (Model: PZEM-015)- Measurement accuracy: 1%5. Impedance:- Measuring range: 0-1000Ohm- Display format: less than 100Ohm displayed as: 99.9OhmGreater than or equal to 100Ohm displayed as: 999ohmWhen the test range is exceeded or the current is zero, "---" is displayed.- Minimum resolution: 0.1ohm- Measurement accuracy: 1%6. Internal resistance:- Measuring range: 0-999Milliohm-Display format: 999Milliohm When the test range is exceeded or the current is zero, "---" is displayed.- Minimum resolution: 1Milliohm- Measurement accuracy: 1%Note: Before testing the internal resistance, you need to preset the full voltage according to the battery type, and you can test it after it is fully charged; if it is not fully charged, you can set the no-load battery to the full voltage, and then test it; the internal resistance is not a fixed value, the more the battery is discharged, the more The more, the higher the resistance.7. Capacity:- Measuring range: 0-1000Ah- Display format: less than 1AH is: 999mAHLess than 10Ah displayed as: 9.99 AhLess than 100AH ​​is displayed as: 99.9ahLess than 1000AH is displayed as: 999AH- Minimum resolution: 1mAH- Measurement accuracy: 1%8. The discharge energy is represented by the battery symbol, with a total of 10 grids, and each grid represents 10% of the power.9. Energy- Measuring range: 0-9999kWh-Display format: less than 1kWh display as: 999WhLess than 10kWh displayed as: 9.99kwhLess than 100kWh is displayed as: 99.99kwhLess than 1000kWh is displayed as: 999.99kWhGreater than or equal to 1000kWh displayed as: 9999kWhReturn to zero on overflow- Minimum resolution: 1Wh- Measurement accuracy: 1%

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1. Small and easy to carry, it can be used to measure jewelry, leather, metal plate, paper, film, wire and similar materials.2. Accurate measurement and easy operation3. Material: metal4. Color: silver5. Measuring range: 0-10mm6. Measurement accuracy: 0.1mm

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1. Power supply: 230V AC 50/60Hz2. Current: 40/63A3. Over-voltage protection value range: 230-300V4. Under-voltage protection value range: 210-140V5. Installation: 35mm DIN rail6. Material: ABS + electronic components7. Size: about 8.5x6.5x3.7cm8. Weight: about 184 gramsFeatures:1. Over-voltage protection2. Under-voltage protection3. Over-current protection4. Automatic recovery5. Adjustable recovery delay time6. Voltage display (voltage measurement)7. Current display (current measurement)

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1. Material: ABS2. Power supply: rechargeable lithium battery 2000mAh3. Display mode: LED screen4. Atmospheric pressure: 86Kpa - 106Kpa5. Sampling time: 1.5 seconds6. Detection temperature: -10 to 50 degrees celsius7. Relative humidity: 20 percent to 85 percent8. Storage temperature: -10 degrees celsius to 60 degrees celsius9. 5V DC power supply for charging10. Product size: 270x90x35mm11. Weight: 268 gramsPacking list:- Host x 1- Manual x 1- Charging cable x 1

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1. Material: metal+ABS2. Support history saving3. Support temperature offset4. 4.3 inch LCD screen display, history record preservation5. Temperature unit between celsius and fahrenheit switch6. CO2 Technology: Infrared (NDIR)7. CO2 detection range: 400ppm -5000 ppm8. CO2 alarm value: 1000ppm9. CO2 alarm on/off function (if you don't like the alarm, you can manually set it to turn off)10. Power supply: rechargeable lithium battery 3000mAh11. Can detect CO2 (carbon dioxide), temperature and humidity, with clock and recording functions12. Combining infrared (NDIR) sensor with built-in fan, it can monitor carbon dioxide (CO2), temperature and humidity in real time on its digital LCD display13. Product size: 145x78x97.2mm14. Product net weight: 225 gramsPacking list:- Host x 1- Manual x 1- Charging cable x 1

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Parameter:1: Intelligent anti-burnout, 1X can withstand 600V withstand voltage2: Afterglow display technology3: 2.4 inch color display4: 100MHz analog bandwidth@500MS/s sampling rate (1X = 5MHz, 10X = 100MHz)5: One-key storage waveform6: Built-in 64M storage space, store 2000 waveform pictures7: Powerful waveform file manager, supports thumbnail browsing, viewing, detailed viewing, flipping, deleting and other functions8: The measuring voltage range is high, 1X can measure 0~80V, 10X can measure 0~800V9: 12 parameters measurement (MAX) VPP, VP, Vmax, Vmin, Vavg, Vrms, Frequent, Duty+, Duty-, Time+, Time-, Time10: Freeze waveform display at any time (pause function)11: Ultra-small size, easy to carry12: Memory compression technology, the waveform refresh screen does not flicker13: Analog bandwidth: 100MHz14: Real-time sampling rate (MAX): 500MS/s15: Vertical sensitivity: 50 mV/div ~ 100 V/div16: Horizontal time base range: 50S/div～6nS/div17: Test voltage (MAX): 80V (1X probe), 800V (10X probe)18: ADC precision: 8bits19: Coupling method: AC/DC20: Trigger mode: single, normal, automatic21: Trigger edge: rising edge/falling edge22: External trigger voltage 0-80V23: Display screen: 2.4 inches - 320x24024: Power supply: 3000mAh lithium battery25: Storage depth: 128KB26: Input resistance: 1M27: Dimensions: 114x74x33 mm28. Weight: 250 gramsDescribe:1. FNIRSI-5012H is a multi-functional, practical, and cost-effective handheld oscilloscope, suitable for maintenance industry and R&D industry, with a real-time sampling rate of FNIRSI up to 500MS/s and an analog bandwidth of 100MHz2. With a complete trigger function (single, normal, automatic), whether it is a periodic analog signal or a periodic digital signal, it can be used freely3. Built-in high voltage protection module, can withstand up to 400V continuous voltage and 600V peak voltage, don’t worry about burning out the oscilloscope if the high voltage doesn’t reach the 10X position4. Large time base scan mode for monitoring slow level changes5. Equipped with efficient one-button AUTO, the measurement waveform can be displayed without complicated adjustments6. Display high-definition LCD screen, 2.4 inches 320x240 resolution7. Extremely convenient and fast waveform storage function, built-in 64M storage space, can store 2000 pieces 8. Waveform pictures, the storage process is simple and fast, save the current waveform anytime and anywhere, just one touch, no cumbersome prompts and choices, quiet It is very convenient to save the current waveformPowerful waveform file manager, supports thumbnail browsing, viewing, detailed viewing, page turning, deletion, etc.9. Built-in 3000mah high-quality lithium battery, fully charged can be used continuously for 8 hours10. The fuselage is equipped with a high-quality silicone protective cover, which is non-toxic, lead-free and environmentally friendly, non-slip and shock-proof, fully protects the fuselage, soft in texture, and feels very comfortablePackage includes:Oscilloscope x 1High voltage probe x 1USB cable x 1Manual x 1

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1. Material: ABS, electronic components2. Uses: soil, cheese, water pH monitoring3. Measuring range: 0.00-14.00PH4. Accuracy: +/-0.1pH (at 20℃), +/-0.2PH5. Resolution: 0.01PH6. Battery: AG-13 button battery × 3 (delivery with battery)7. Working temperature: 0-50 degrees Celsius8. Correction: 1 point correction9. Product net weight: 57 grams

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1. High precision, high reliability, suitable for high-end applications 2. Small size, can display voltage and current at the same time 3. Reverse connection protection, reverse connection will not burn, using common ground design 4. Anti-collision design with shell, more durable 5. Adopt industry standard size, more convenient to install 6. Ambient temperature: -15 to 70 degrees Celsius 7. Measuring voltage: DC0-100V, 50A 8. Working voltage: DC4.5-30V 9. Working air pressure: 80-106kpa 10. Working current: less than or equal to 20 mA 11. Precautions: Because the meter head adopts a common ground design, that is, the ground wire of the measuring end is the same as the ground wire of the electrical end, so it can only be connected between the negative pole of the device under test and the negative pole of the power supply. 12. Dimensions: 48 x 29 x 21cm 13. Weight: about 15g

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1. 9.5 inches super large full-screen LCD with large bold red font to display for easy reading.2. 24 hours real-time monitoring the sound level.3. Support hanging on the wall(recommended) or free-standing on the desk.4. Wide measurement range from 30dB to 130dB, Frequency: 31.5Hz - 8KHz, Resolution: 0.1dB/1dB.5. Buzzing and flashing to remind you when the real-time measurement is reached to the alarm level, and hold the data for 3s then back to normal mode.6. Suitable for checking and monitoring the sound level for personal, family, business, studies, industrial, etc.

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1. Fast response speed, high precision, of its stability, good repeatability.2. The apparatus is widely used in metallurgy, power plant, farms, mines, chemical, scientific research, medical, pharmaceutical, environmental protection, and other fields.3. With a large LCD screen displaying the measured results, you can get ammonia gas concentration at a glance.4. The ammonia gas monitor has an audio and visual alarm, you can set an audio alarm decibel that can give you an obvious prompt.5. Portable and handheld, easy to operate and carry.6. Power supply: 3.7V li-battery.

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1. WiFi connection, temperature, humidity, carbon dioxide, buzzer alarm, Tuya Smart2. When the carbon dioxide concentration reaches the preset value, the buzzer will alarm3. Applicable to a variety of scenarios, real-time monitoring, in the car, public places, offices, bedrooms4. Back hook, easily fixed in the air5. Temperature/humidity dual detection, cold, warm, dry and wet, clear at a glance6. Temperature range: -10 to 40 degrees Celsius7. Measuring range: 40 square meters8. Battery capacity: 2400mah9. Power supply mode: TYPE-C/USB-C charging/built-in lithium battery10. Charging voltage: 5V/1A11. Dimensions: 98 x 90 x 40mmManual calibration:1. Press and hold three keys at the same time in the off state2. Enter the calibration state, and the screen will display a 200-second countdown3. Calibration is successful

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Features:1. LED display, more friendly interface;. LED matrix light, simple display, energy saving, protect your eyes.2. Touch buttons to make simple operation.3. The ultra-thin embedded panel perfectly fits all kinds of walls; The visiable thickenss above the wall is only 12.4mm.4. Frameless acrylic panel design, simple and elegant;5. Classic black/white color scheme, seamlessly integrated.6. Compatible with standard 86mm square cassettes and 60mm European cassettes to meet all installation environments;7. Interlock to connect gives you easy installation.Function:1. Rich function options, Modbus, WIFI, keycard, etc, to meet all your needs;2. Strict temperature control accuracy (+/- 1 degree C) to provide the warmth you want;3. Power off protection, save all your settings safely;4. Preset adjustment of 5+1+1 mode in a week, programmable setting of 6 time periods a day, green energy saving, Less cost, more intelligent and environmental protection;5. Support the creation of product local groups/shares to achieve unlimited centralized control of the number of products/ multi-terminal control;6. Perfect access: Tmall GSpecification:1. Current Load: 5A (water heating, waterlgas boiler), 16A (electric heating)2. Sensor: NTC3950, 10K3. Accuracy: +/-1 degree C4. Set Temp. Range: 5-35degree C5. Room Temp. Range: 5-99 degree C6. Display Temp. Range: 5 ~ 99 degree C7. Ambient Temp.: 0~ 45 degree C8. Ambient Humidity: 5 ~ 95 % RH (Non Condensing)9. Storage Temp.: -5~ 45 degree C10. Power Consumption: Less than 1. 5W11. Timing Error: Less than 1%12. Shell Material: PC +ABS ( Fireproof)13. Installation Box: 86 x 86mm Square or European 60mm Round Box14. Wire Terminals: Wire 2 x 1.5 mm2 or 1 x 2.5 mm215. Protection Class: IP2016. Buttons: Capacitive Touch Buttons

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1. Material: ABS2. Power specification: AC110/220V3. Temperature display range: -50 degrees to 100 degrees4. Temperature setting range: -30 to 100 degrees5. Working humidity range: 5-90%RH6. Temperature resolution: 0.5 degrees7. Sensor type: 10K39508. AI intelligent adjustment technology, cascade control adjustment, precise temperature control9. The circuit board is designed with strong anti-interference ability, which can deal with field interference in various complex working conditions10. Comprehensive power protection technology, safe and worry-free

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