Test Equipment

1. Measurement range: minus 50-530 degrees Celsius (negative 58-986 degrees Fahrenheit), 2. Measurement accuracy: +/-1.5 or 1 degrees Celsius take the big one 3. Celsius/Fahrenheit temperature unit conversion, data retention 4. 9-point laser positioning switch, LCD backlight switch 5. Automatic shutdown function 6. Self-calibration, data storage

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1. Measurement range: -50 to 380 degrees Celsius 2. Working temperature: 0-50 degrees Celsius 3. Storage temperature: -20 to 60 degrees Celsius 4. Material: ABS 5. 9V battery, durable 6. Fast boot, large screen display

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1. Material: ABS/PC2. Size: 68 x 22mm3. Features: high-sensitivity sensor, LCD screen, wall-mounted hole design, ultra-low power consumption4. Alarm sound: greater than 75 decibels5. Function: temperature detection, humidity detection, intelligent linkage, precise detection, APP push reminder, large display screen6. Power supply mode: CR232 battery (included in the product)

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1. Size: 68x68x30mm2. Net weight: 72g3. Gross weight: 82g4. Features: precise detection, multiple alarms, intelligent linkage, low power consumption, real-time monitoring5. Power supply mode: 2 x AA batteries (need to purchase by yourself)

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Feature:1. Accurate detection: It can accurately and quickly monitor the indoor CO2 concentration to protect your health. It can also test indoor temperature and humidity in real time.2. Stable and durable: Built-in rechargeable battery can continuously monitor air quality for a long time. The clear screen display and three-color LED indicator can help you clearly identify the air quality.3. Wide application: suitable for air quality monitoring in cars, rooms, schools, office buildings, greenhouses, factories, hotels, hospitals, etc., especially in places with infants, young children, the elderly, pregnant women, etc.4. Portable and light: small size, easy to carry, can be used for a long timeSpecification:1. Material: ABS2. Display mode: LCD screen3. CO2 detection method: infrared (NDIR)4. Sampling time: 1.5 seconds5. Product size: 70x80x35mm/2.76x3.15x1.38 inches6. Detection temperature: -10 to 50 degrees Celsius7. Relative humidity: 20%-85%8. Storage temperature: -10 to 60 degrees Celsius9. CO2 concentration unit: PPM, detection range: 400-5000PPM10. Power supply: 1600mAh capacity lithium battery11. 5V DC power charging via USB port12. Product weight: 150g

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1. 100% brand new and high quality. 2. Small and lightweight, easy to carry. 3. Display devices use high bright LED digital tube, stunning display effect. 4. With reverse polarity protection, reverse not burned. 5. The voltmeter only two wires, wiring simple and reliable performance. 6. Measuring Range: DC 2.5-30V. 7. Operation temperature: -10~65 degrees Celsius. 8. Red wire is connected to positive pole, and black wire to negative pole.

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1. CO2 detection range: 400-6000PPM2. CO2 detection sensitivity: 1PPM3. Detection range: 0-2PPM4. Temperature measurement range: 0~60 degrees Celsius5. Temperature measurement accuracy: +/-1 degrees Celsius6. Humidity measurement range: 0%~99%RH7. Humidity measurement accuracy: +/-2%RH8. Charging method: DC5V 500mA micro USB interface9. Battery: Built-in lithium battery 1200mAh10. Size: 9 x 7 x 4cm/3.54 x 2.75 x 1.18inch11. Screen: about 2.75 inches12. Net weight: about 175gfeature:1. Five in one: It can be used as carbon dioxide concentration detection, thermometer and hygrometer at the same time.2. Built-in 1200mha lithium battery, fully charged can stand by for about 6-8 hours3. Color screen: display current CO2 data, temperature and humidity data. The color ring changes according to the CO2 content.4. Simple operation: long press the "on-off" button for 3 seconds to turn on and off. It will automatically detect CO2.5. Small and portable: it can be placed in the kitchen, living room, bedroom, or taken out.The package includes:1 x Carbon dioxide meter1 x USB charging cable1 x Manual

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1. Display mode: smart color screen2. Working voltage: DC 5V3. Working temperature: 10-50 degrees Celsius4. Battery capacity: 1200mA5. Alarm method: color and sound dual reminder6. Standby time: 10 hours7. Security range:-CO2: 350-2000ppm-TVOC: 0.000-2.000 mg/m3-HCHO: 0.000-1.000 mm/m3-Temperature: 0-90 degrees Celsius-Humidity: 0-99%RH

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1. When power is detected, it will emit light and sound2. A high-brightness white LED is built in the pen tip, which can be used as a simple flashlight3. The non-contact electric pen, integrally insulated and sealed by plastic, is safely protected during the electric test, and there is no danger of electric shock.4. Material: Plastic5. Standard: Metric6. Power supply mode: 2 AAA batteries (the product does not contain batteries and needs to be purchased separately)7. Measuring voltage: AV 90-1000V8. Operating temperature: -10 to 50 degrees Celsius9. Cleaning method: wipe with a damp cloth10. Size: 22x17x157mm11. Weight: 40g

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1. Light weight, user friendly interface 2. Backlight function. 3. Voltage stability control technology, low power consumption 4. Measurement range: 0Lux ~200,000Lux 5. Power: 3 X 1.5V AAA battery (not included). 6. Application: Factories, schools, office, transportation route, house and so on, used to measure light intensity of various occasions.

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1. Measurement of wind velocity, temperature and flow 2. Unit conversion of wind velocity,temperature and flow 3. Selection among upper wind speed/lower wind speed/average wind speed/current wind speed. 4. Temperature unit selection: Degree C / Degree F 5. Auto power off function (power off automotically if no further operation) 6. Large LCD display, easy to read 7. Power: 3 X 1.5V AAA battery (not included). 8. Wind chill indication 9. Low battery indication 10. Bluetooth function 11. 999 groups data recording

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Measuring Rang : 30-130dBA Accuracy +-1.5dBFrequency response :31.5HZ-8KHZFrequency weighting : A weightResolution: 0.1dB Working temperature and humidity：0-40 10-80%RHStorage temperature and humidity ：-10-60 ，0~90%RH

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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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1. Non contact precise measurement 2. The infrared thermometer is used to measure the surface temperature of objects. It is suitable for all kinds of high temperature, dangerous or non-contact hand-held objects 3. Degree C/ degree F selection 4. Temperature display resolution: 0.1 degree C/ degree F 5. Distance to Spot Size: 12:1 6. Temperature range: -58 - 788 degree F(-50 - 420 degree C) 7. Batteries: 1.5V AAA battery x 2 (Not included)

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1. Super fast reponse in 0.5 seconds, and able to measure at the range of -58 - 716 degree F(-50 - 380 degree C). 2. Non contact precise measurement 3. This infrared thermometer is used for measuring the temperature of the object surface, which is applicablefor various hot, hazardous or hard-toreach objectswithout contact safely and quickly 4. Distance to Spot Size: 12:1 5. Degree C/ degree F selection 6. Accuracy: +/-1.5 degree C(+/-2.7 degree F) or +/-1.5% 7. Emissity: 0.8 or 0.95 8. Temperature display resolution: 0.1 degree C/ degree F 9. Batteries:1.5V AAA battery x 2 (Not included) 10. The unit will automatically turn off if there is no operation in 20 seconds to conserve the battery.

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1. Fast and easy measurement 2. Non contact precise measurement 3. Built-in laser pointers increase the target accuracy 4. This infrared thermometer is used for measuring the temperature of the object surface, which is applicablefor various hot, hazardous or hard-toreach objectswithout contact safely and quickly 5. Degree C/ degree F selection 6. Temperature measurement range: -50 degree C- 650 degree C ( 58-1202 degree F ) 7. Color LCD display 8. Temperature display accuracy: 0.1 degree C/ degree F 9. Batteries:1.5V AAA battery x 2 (Not included)

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As 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 fields Features 1. 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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Features 1. This infrared thermometer is used for measuring the temperature of the object surface, which is applicable for various hot, hazardous or hard-toreach objects without contact safely and quickly. 2. This unit consist of optics, temperature sensor signal amplifier, processing circuit and LCD display. The optics collected the infrared energy emitted by object and focus ontothe Sensor. Then the sensor translates the energy into an electricity signal. This signal will be turned out to be digital shown on the LCD after the signal amplifier and processing circuit. Specification 1. Temperature Range: -50 ~ 950 degree C (-58~1742 degree F) 2. Accuracy: +/-1.5% or +/- 1.5 degree C 3. Repeatability: +/-1% or +/- 1 degree C 4. Distance to spot size: 12:1 5. Emissivity: 0.1~1.00 Adjustable 6. Display resolution: 0.1 degree C/ degree F 7. Response time: 500ms 8. Wave length: 8-14um 9. MAX/MIN/AVG/DIF Reading 10. High / low temperature alarm 11. Data store / recall function 12. Degree C/ degree F Switch

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Features 1. This infrared thermometer is used for measuring the temperature of the object surface, which is applicable for various hot, hazardous or hard-toreach objects without contact safely and quickly. 2. This unit consist of optics, temperature sensor signal amplifier, processing circuit and LCD display. The optics collected the infrared energy emitted by object and focus ontothe Sensor. Then the sensor translates the energy into an electricity signal. This signal will be turned out to be digital shown on the LCD after the signal amplifier and processing circuit. Specification 1. Temperature Range: -50 ~ 750 degree C (-58~1382 degree F) 2. Accuracy: +/-1.5% or +/- 1.5 degree C 3. Repeatability: +/-1% or +/- 1 degree C 4. Distance to spot size: 12:1 5. Emissivity: 0.1~1.00 Adjustable 6. Display resolution: 0.1 degree C/ degree F 7. Response time: 500ms 8. Wave length: 8-14um 9. MAX/MIN/AVG/DIF Reading 10. High / low temperature alarm 11. Data store / recall function 12. Degree C/ degree F Switch

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Features1. Automatic calibration to ensure accuracy. 2. Automatic linear compensation: this advanced software program improves the accuracy by correcting the nonlinear accuracy of the sensor. 3. Quickly adjust the sound speed / thickness and quickly call out the stored data 4. Coupling status indication: observe the coupling icon to see whether the coupling is completed. 5. It has 12 thickness measurement storage and calling functions to facilitate high-altitude operation or field operation. 6. Sound velocity measurement. 7. The sound speed of 12 gears of different materials is adjustable. 8. Thickness alarm setting. 9. LCD backlight display. 10. Low battery indication and automatic shutdown. 11. Metric / imperial selection.Specification1. Accuracy: 1.5dB (under reference conditions) 2. Measuring Level: 30-130dB (A)/35-130dB (C) 3. Frequency Range: 31.5Hz to 8.5KHz 4. Linearity Range: 50dB/100dB 5. Digital Display: 5 digits 6. Resolution: 0.1dB 7. Bar Graph: 50 dB (scale at 1 dB step for monitoring current sound pressure level display) 8. Overload Indication: OVER/UNDER 9. Frequency Weighting: A and C 10. Level Ranges: 30-80dB, 50-100dB, 60-110dB, 80-130dB 11. Self Calibration Time: 3sec 12. Sampling Rate: 20 times/seconds 13. AC Signal Output: 0.707Vrms/ full bar graph, output impedance is about 600ohm 14. DC Signal Output: 10mV/dB,output impedance is about 100ohm 15. Dynamic Characteristic: FAST (high speed)/SLOW (low speed) 16. Power Supply: 4x AA 1.5V battery or DC 6V 100mA (not include)

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1. The measurement accuracy reaches SO4064 level B 2. The counter part is vacuum treated and isolated from the outside air and the measured water, so it is not easy to atomize to keep the counter clear 3. Under the condition of ensuring performance, the increase of the water inlet and outlet holes of the impeller box can effectively reduce the pressure loss of the water meter 4. Anti-rust all-copper joint with leak-proof sealing ring 5. Wing rotation structure: rotary wing type 6. Pressure rating: less than or equal to 1.0MPa/1.6MPa 7. Installation method: horizontal installation 8. Product size: 11.5x7.5x8.5cm 9. Product weight: 611g

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Features1. LCD display with backlight, easy for reading. 2. Measure wind speed & temperature. 3. Wind speed range: 0-30m/s; temperature range: -10-45 degree C/14-113 degree F. 4. Current/MAX./average wind speed reading to choose. 5. 5 wind speed units for selection: m/s, km/h, ft/min, knots, mph. 6. Beaufort scale display; wind chill indication and low battery indication. 7. Auto/manual power off. 8. Great Tool for windsurfing, sailing, fishing, kite flying and mountaineering.Specification1. Display: LCD 2. Measurement Units: M/s, km/h, ft/min, knots, mph 3. Temperature Unit: Degree C / degree F 4. Temperature Range: -10-45 degree C / 14-113 degreeF 5. Speed Range: 0-5860ft/min; 0-30m/s; 0-90km/h; 0-65mph; 0-55knots 6. Accuracy: (+/-)5% 7. Resolution: 19ft/min; 0.1m/s; 0.3km/h; 0.2mph; 0.1knots

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Features1. MAX wind speed/average wind speed/current wind speed selection 2. Degree C/F temperature unit selection 3. 5 Units selection: m/s, Km/h, ft/min, Knots, mph 4. Wind force level 6. LCD backlight display 7. Manual/Automatic power off 8. Frozen tips 9. Low power tips 10. Widely Application: Aircraft industry, offshore operation, environmental monitoring, air-conditioning system, ventilation system, fan manufacturingSpecification1. Measuring items: Air velocity (Wind speed), Air temperature 2. Range of Air velocity: 0~30m/s, 0~90km/h, 0~5860ft/min, 0~55knots, 0~65mph 3. Accuracy of Air velocity: +/-5% 4. Range of Air temperature: -10-45C (14-113F) 5. Accuracy of Air temperature: +/-2C (3.6F) 6. Resolution of Air velocity: 0.1m/s, 0.2C

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1. Active part: Active coil type 2. Pointer material: Zinc-nickel alloy 3. Pointer color: Red 4. Pointer swing direction: From left to right 5. Pointer length: 16.5+/-1mm from the end of the needle to the central axis 6. Pointer width: 0.45 +/- 0.05mm 7. Shell material: PMMA+ABS 8. Magnet material: AlNiCo sintered magnet 9. Frame material: SPCC 10. Enameled wire material: UEW polyurethane copper wire 11. Direction of use: Vertical 12. LED: white 2.8-3.8V 20mA

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1. Active part: Active coil type 2. Pointer material: Zinc-nickel alloy 3. Pointer color: Brown 4. Pointer swing direction: From left to right 5. Pointer length: 16.5+/-1mm from the end of the needle to the central axis 6. Pointer width: 0.45 +/- 0.05mm 7. Housing material: ABS 8. Magnet material: AlNiCo sintered magnet 9. Frame material: SPCC 10. Enameled wire material: UEW polyurethane copper wire 11. Direction of use: Vertical 12. LED: 12V 50mA frosted bulb

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1. Quickly measure the thickness of paint coating, with a wider measuring range: 0-1800um/0-70.9mil/0-1.8mm, menu operation. 2. Measurement of the thickness of the non-magnetic coating on the surface of the magnetic metal substrate. The symbol of the magnetic substrate is Fe. 3. Automatic power-off measurement, metric/imperial um/mil/mm unit can be switched. 4. Two measurement methods: single measurement and continuous measurement. Three calibration modes: basic, offset, and zero calibration. 5. With charging protection, multi-interface display and screen brightness selection. 6. 360-degree screen rotation can easily read data, and the V-shaped groove on the probe can be used for small cylindrical parts. 7. Large color high-definition LCD display, which can store 15 data and bright backlight, make it easy for you to read the results clearly. 8. Portable streamlined design, special hand-held non-slip treatment, light weight, small size, suitable for the palm of the hand. 9. It is widely used in the fields of manufacturing, metal processing, chemical industry, and commodity inspection, and can work stably in laboratories, workshops and outdoors. 10. It can quickly, non-destructively and accurately measure the thickness of non-magnetic coatings (such as paint, electroplating, film, etc.) on magnetic metal substrates 11. Material: ABS plastic 12. Unit: micron, mil, millimeter 13. Lower limit diameter of magnetic metal substrate: 12mm 14. Lower limit thickness of magnetic metal substrate: 0.5mm 15. The lower radius of curvature of the magnetic convex substrate: 2mm 16. The lower radius of curvature of the magnetic concave substrate: 11mm 17. Size: 70x35x150mm 18. Item weight: 100g

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1. Gas measurement: The sensor warms up when the countdown is started. The refresh rate is 1HZ. Do not charge during the measurement of combustible gas, otherwise it may explode. 2. High/low alarm: 4 default high/low alarms, 4 types of alarms, and the alarm sound can be turned off. 3. Data recording: 1000 pieces of data can be recorded. The default interval of data recording is 5 seconds, which can be set in inL of the setting mode. When the interval is set to 0 seconds, the data logging function fails. The delete operation will delete all recorded data. 4. Temperature display: set the unit to Celsius or Fahrenheit, the default unit is Celsius 5. Automatic shutdown: automatic shutdown without operation within 30 minutes. This feature is turned on by default. 6. Battery capacity: It is forbidden to start the unit to avoid measurement errors or explosion. If the battery is low, it may turn off automatically. Charging time: about 4 hours. Discharge time: about 8 hours. 7. Zero point calibration: It is recommended to calibrate the device at zero point or zero offset every month to ensure the high accuracy of the measurement (please ensure that the battery power is above 2bar) calibration, and place it in the air for a period of time after powering on. Make sure that the device body temperature is slightly higher than the ambient temperature. 8. Temperature compensation: the measured data is compensated within the range of -20 to 50 degrees Celsius 9. Software error: The machine crashes/shutdown indicates that an error occurred during the operation. If the software is forced to shut down, please press the on/off button to activate the device 10. Adopt high-quality gas sensor, safe and reliable, accurate measurement and stable performance. 11. It has excellent sensitivity and repeatability, is easy to use and maintain, and meets the requirements for high reliability of equipment in industrial field safety monitoring. 12. The shell is made of high-strength engineering plastics and composite non-slip rubber, dust-proof and explosion-proof, high strength, smooth hand feeling 13. Battery type: 3. 7V rechargeable lithium battery 14. LCD displays real-time data and system status 15. Response time (90%): less than 30 seconds 16. Size: 71x153x49mm 17. Weight: 218.7g

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1. This product is an infrared thermal imager that integrates surface temperature measurement and real-time thermal imaging 2. The traditional infrared thermometer needs to measure each part one by one, but the infrared thermal imager does not need it, thus saving time 3. Potential problems may be clearly displayed on the color display. And use the center point measurement cursor to quickly and accurately locate and measure the temperature of the target object. In order to increase the degree of discrimination, the product is equipped with a visible light camera 4. The thermal image and visible light image are stored in the device and can be read via USB or stored in the computer to generate reports or print 5. The product is small in size, easy to operate, and powerful. It is an ideal choice for electric power, electronic manufacturing, industrial testing and other fields 6. The emissivity can be adjusted to improve the measurement accuracy of semi-reflective objects 7. The upper and lower temperature cursors can guide the user to the upper and lower temperature areas of the thermal image 8. Optional palette 9. Application areas include electric power, metallurgy, petrochemicals, machinery, coal, transportation, fire protection, national defense, etc. It can not only perform real-time detection under high-voltage, high-current, and high-speed operation, but also realize real-time detection 10. There is no need to cut off power, stop or stop production to detect potential problems and prevent failures 11. Display: 2.8-inch full-angle TFT display 12. Infrared image resolution: 220x160 13. Field of view: 35x26 degrees 14. Temperature measurement range: -20 to 450 degrees Celsius 15. Measurement accuracy: +/-2 degrees Celsius/+/-2% (more than 300 degrees Celsius, the accuracy is +/-5%) 16. Visible image resolution: 300,000 pixels 17. LCD resolution: 320??240 18. Focus distance: 0.5-70 meters 19. Emissivity: adjustable from 0.01 to 1.00 20. Thermal image frame rate: 9 Hz 21. Wavelength coverage: 8-14um 22. Focus mode: fixed 23. Palette: rainbow, iron oxide red, cool color, black and white, white and black 24. Storage capacity: built-in 3G (store more than 20,000 images) 25. Dimensions: 69.4x225x93.4mm 26. Weight: 329.1g

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1. One machine with dual use, can test electric and magnetic field radiation at the same time 2. Sound and light alarm, when the detection result exceeds the safe value, the instrument will automatically alarm 3. Data lock, one-key lock of radiation value 4. LCD graphic display radiation value trend 5. Radiation assessment, remind you whether the radiation value is safe 6. Stylish design, easy to operate, it is easy to move or perform on-site measurement 7. Can test electric field radiation and magnetic field emission to achieve good test results 8. Used to test and study indoor and outdoor electromagnetic radiation 9. Built-in electromagnetic radiation sensor, after processing by the control microchip, the radiation value can be displayed on the LCD digital display. You can deal with electromagnetic radiation reasonably or take effective preventive measures based on the test results 10. Test bandwidth: 5Hza??3500MHz 11. Sampling time: about 0.4 seconds 12. Working temperature: 0-50 degrees Celsius 13. Operating humidity: relative humidity is less than 80% 14. Working voltage: 9V 15. Power supply: 6F22 9V battery 16. Size: 63.6x31x125.8mm 17. Weight: 146g

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1. This product is an infrared thermal imager that integrates surface temperature measurement and real-time thermal images. 2. The traditional infrared thermometer needs to measure each part one by one, but the infrared thermal imager does not need it, thus saving time 3. In addition, the center point measurement cursor is used for fast and accurate positioning to measure temperature to increase the degree of discrimination. The product is equipped with a visible light camera 4. The thermal image and visible light image are stored in the device, which can be read via USB or stored in a computer to generate reports or print 5. The product is small in size, easy to operate, and powerful. This is an ideal choice for electric power, electronic manufacturing, industrial inspection and other fields 6. The emissivity can be adjusted to improve the measurement accuracy of semi-reflective objects. 7. The upper and lower temperature cursors can guide the user to the upper and lower temperature areas of the thermal image 8. Optional palette 9. Application areas include electric power, metallurgy, petrochemicals, machinery, coal, transportation, fire protection, national defense, etc. It can not only perform real-time detection under high-voltage, high-current, and high-speed operation, but also realize real-time detection 10. There is no need to cut off power, stop or stop production to detect potential problems and prevent failures 11. Display: 2.8-inch full-angle TFT display 12. Infrared image resolution: 220x160 13. Field of view: 35x26 degrees 14. Temperature measurement range: -20 to 450 degrees Celsius 15. Measurement accuracy: +/-2 degrees Celsius/+/-2% (more than 300 degrees Celsius, the accuracy is +/-5%) 16. Visible image resolution: 300,000 pixels 17. LCD resolution: 320??240 18. Focus distance: 0.5-70mk 19. Emissivity: adjustable from 0.01 to 1.00 20. Thermal image frame rate: 9 Hz 21. Wavelength coverage: 8-14um 22. Focus mode: fixed 23. Palette: rainbow, iron oxide red, cool color, black and white, white and black 24. Storage capacity: built-in 3G (store more than 20,000 images) 25. Dimensions: 69.4x225x93.4mm 26. Weight: 329.1g

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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 of high-reliability equipment for industrial site 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 feel 8. Measuring range: 0-100%LEL 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. Machine time: more than 8 hours (with slight change in working status) 15. Size: 71x153x49mm 16. Weight: about 215.4g

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1. Voltage: AV230W~60HZ2. Power: 2W3. Temperature range: 5-45 degrees Celsius (can be changed to 90 degrees Celsius)4. External limit temperature value: 5-60 degrees Celsius (factory setting is 35 degrees Celsius)5. Measurement: internal and external NTC6. Deviation value: 0.5-10 degrees Celsius adjustable, FS 1 degrees Celsius7. Ambient temperature: 5~50 degrees Celsius8. Protection level: IP209. Shell material: flame-retardant PC

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1. Material: Nickel-plated brass, PVC rubber sheath2. Purpose: Slligator clip for multimeter3. Easy to connect multimeter test probe4. PVC rubber sheath, plastic insulation, safe to use5. Current: Up to 10A6. Voltage: Up to 1000V7. Size: Total length about 6.6cm/piece8. Weight: About 20g/pair

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1. Applicable environment: high-speed rail/airport/subway/hospital/venue/sports meeting2. Intelligently adjust the detection distance for different objects3. The built-in induction coil (if there is a metal substance) is detected within the detection range, it will immediately alarm4. Convenient operation, the probe can be rotated 180 degrees, suitable for more scene measurement5. Intelligent power saving technology, long-lasting battery life6. Battery type: DC9V 6F22 (not included)7. Weight: 230g (net weight)8. Alarm: Sound and light alarm9. Working temperature: -10~ +50 degrees Celsius10. Current consumption: less than 3mA11. LDE indicator: working and low battery indicator

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1. Audio and visibility LED display2. Power-on indication (white LED)3. Target indicator (green/red LED)4. Sensitivity adjustment function5. It can detect undetectable metals buried in beaches, caves, grasslands, etc. (such as coins, cultural relics, jewelry, gold, silver, etc.). This detector is versatile, simple and easy to operate, and is a good helper in search work.6. Power supply: 9V standard or rechargeable battery (not included)7. Working frequency: 90KHz8. Audio: 2.3KHz9. Working current: 50mA10. Working voltage: 9V11. Temperature range: -5~55 degrees Celsius12. Net weight: 120G13. Appearance size: 19.2(L) x 6.5(W) x 2.2(H)cm

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1. 360-degree clear scale, scale positioning mark2. Large compensation range, large aperture objective lens, Anping precision, high-definition imaging3. 32 times objective lens, clear imaging4. Telescope: positive image5. Objective lens diameter: 38mm6. Round trip standard deviation per kilometer: 1.5mm7. Magnification: 32X8. Product standard configuration: instrument, manual, warranty card, tool box, correction pin, allen wrench9. Size: 350x190x230mm10. Weight: 3kg

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1. Color touch screen, clear LCD screen display2. High magnification optical lens3. One-key angle measurement, height measurement and distance measurement4. Rotate the focus to freely adjust the clarity of the eyepiece5. Safety protection, waterproof and dustproof, anti-fall and durable6. Both myopia and presbyopia can be observed with the naked eye, without glasses7. Accuracy: 1m8. Liquid crystal display: transparent LCD9. Material: plastic + electronics10. Working voltage: 3.7v11. Measuring range: 800m/1000m/1500m12. Resolution: 0.1m13. Temperature range: 0-40 degrees Celsius14. Protection level: IP5415. Battery capacity: 750mah16. Power supply: USB charging / built-in lithium battery17. Magnification: 6 times18. Battery life: Can be charged/discharged 800 times19. Product accessories: Host, non-cloth bag, USB charging cable, lanyard, certificate and warranty card, manual20. Dimensions: 104 x 76.5 x 41mm21. Weight: about 385g

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1. A 4-inch LCD screen is used. Due to the larger screen, there is more PCB space for installing components and batteries2. Use an independent charge pump to power the mixer and add tantalum capacitors, which can further reduce power supply noise3. In order to make it easier for geeks to create more possibilities, UART1 and PC14, PC15 interfaces are drawn on the PCB, which is convenient for DIY expansion4. ABS shell, can effectively protect SMA connectors and buttons5. DC dimming is added, it can be seen more clearly when used outdoors, and it is more comfortable to use indoors.6. Optimized the bridge to make full use of the Si5351s harmonics. Now the 5th harmonic can be used to measure to 1.5GHz;7. When the fundamental wave is used, the output level of CH0 is increased to 0dBm, and the reflection measurement is more accurate;8. Solve the previous abnormality of NanoVNA-H near 6MHz9. The redesigned power management circuit further reduces power noise, reduces USB power interference, reduces charging current, and protects the battery10. Optimized PCB layout, accommodating 1950mAh battery, more than 8 hours of usepacking list:1. NanoVNA host x 1 (including 4-inch touch screen, 2000mAh battery)2. 15cm SMA male to male RG316 RF cable x 23. SMA female to female connector x14. SMA simple calibration kit SHORT x15. SMA simple calibration kit OPEN x16. SMA simple calibration kit LOAD x17. USB Type-C data cable x18. Type-c to Type-c x1 supports connection with most Android phones9. One pick

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1. Color touch screen, clear LCD screen display2. High magnification optical lens3. One-key angle measurement, height measurement and distance measurement4. Rotate the focus to freely adjust the clarity of the eyepiece5. Safety protection, waterproof and dustproof, anti-fall and durable6. Both myopia and presbyopia can be observed with the naked eye, without glasses7. Accuracy: 1m8. Liquid crystal display: transparent LCD9. Material: plastic + electronics10. Working voltage: 3.7v11. Measuring range: 800m/1000m/1500m12. Resolution: 0.1m13. Temperature range: 0-40 degrees Celsius14. Protection level: IP5415. Battery capacity: 750mah16. Power supply: USB charging / built-in lithium battery17. Magnification: 6 times18. Battery life: Can be charged/discharged 800 times19. Product accessories: Host, non-cloth bag, USB charging cable, lanyard, certificate and warranty card, manual20. Dimensions: 104 x 76.5 x 41mm21. Weight: about 385g

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1. Color touch screen, clear LCD screen display2. High magnification optical lens3. One-key angle measurement, height measurement and distance measurement4. Rotate the focus to freely adjust the clarity of the eyepiece5. Safety protection, waterproof and dustproof, anti-fall and durable6. Both myopia and presbyopia can be observed with the naked eye, without glasses7. Accuracy: 1m8. Liquid crystal display: transparent LCD9. Material: plastic + electronics10. Working voltage: 3.7v11. Measuring range: 800m/1000m/1500m12. Resolution: 0.1m13. Temperature range: 0-40 degrees Celsius14. Protection level: IP5415. Battery capacity: 750mah16. Power supply: USB charging / built-in lithium battery17. Magnification: 6 times18. Battery life: Can be charged/discharged 800 times19. Product accessories: Host, non-cloth bag, USB charging cable, lanyard, certificate and warranty card, manual20. Dimensions: 104 x 76.5 x 41mm21. Weight: about 385g

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1. Multiple alarm modes, real-time feedback of gas test2. 2.3-inch high-definition color screen display, multi-interface display, all data are clear at a glance3. Built-in smart menu, convenient operation4. Fast warm-up, support Chinese and English switching menu, multiple alarms, highly sensitive probe5. Rugged aluminum portable tool case6. Sturdy alligator clip on the back7. Measuring range: Combustible gas, oxygen, carbon monoxide8. Battery capacity: 1800mah / 3.7v9. Power supply mode: USB charging10. USB port with protective cover11. Description: GT8211: Oxygen content detector, GT8212: Carbon monoxide detector, GT8210: Flammable gas detector12. Application: Gas detection13. Alarm method: Sound, light, vibration

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1. Measuring range: 30dB-130dB2. Accuracy: +1.5dB (based on standard sound source, 94dB 1KHz)3. Frequency response: 31.5Hz-8. 5KHz4. Frequency weighting: A right5. Response time: about 2 times/second6. Sensor type: 6mm condenser microphone sensor7. Digital display: 3 digits8. Resolution: 0.1dB (less than 100dB), 1dB (greater than 100dB)9. Alarm prompt mode: sound + display10. Alarm output: 5V high level11. Power supply mode: DC5V 1A MicroUSB interface12. Over-range display: H/Lo13. Support system: XP, Win7, Win8, Win1014. Packing list: host x1, power cord x1, hanging hook x2, screws x2, manual x115. Size: about 32.3x17.3x4 cm16. Weight: about 980 gramsFeatures:1. High-precision sensitive probe, 6mm condenser microphone sensor, accurate measurement and sensitive response2. Large screen display, single word 4 inches, the display is clear and clear at a glance3. The back bracket design can be expanded or folded, and different placement methods can be selected according to different usage scenarios.4. A variety of fixing methods to meet different usage scenarios, wall-mounted/hanging/hidden bracket/external bracket5. Sound and light alarm, upper limit alarm value setting, the default alarm value is 130dB at power-on, when the measurement value exceeds the set alarm value, the instrument will sound an alarm and lock the measurement data6. Partial panel design, multiple cooling vents, safe and durable 7. Analog bar level indicator, noise decibel six bars indicator, 30-75dB is displayed in green, 76-130dB is displayed in red8. Alarm output, an external alarm can be connected, 3.5mm two/three section headphone plug9. Silicone operating buttons, comfortable to touch10. Storage function, the instrument automatically stores data every 2s, and the stored value is the larger noise value in 2s. It can be stored continuously for one year. After one year is up, the data of six months ago will be automatically cleared, which can be used by computer software. Export records11. Equipped with a USB interface, which can be connected to a computer and provide computer applications. It can communicate with the computer via USB, download records, real-time sampling, print icons and data, etc.

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1. Automatically switch the range, the probe can be rotated, with high-definition backlight, with data lock2. High sensitivity sensor, portable measurement3. Material: Plastic + Electronics4. Resolution: 1lux5. Working voltage: 4.5v6. Measuring range: 0-199 thousand lux7. Power supply mode: 3 AAA batteries (self-prepared)8. Product accessories: Host, manual, warranty card certificate, color box packaging9. Size: 178x63mm

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1. Rugged and durable, compact and portable, ergonomic grip, accurate and durable2. Infrared pulsed laser, just one touch3. Suitable for outdoor activities and measurement such as golf, hunting, electricity, forestry, etc.4. Anti-reflection green film blessing, 6 times magnification, still clear5. Rotating focus 6 degree diopter, myopia/presbyopia can be observed with naked-eye, no need to wear glasses6. Laser wavelength: 905nm7. Accuracy: 1m8. Objective lens aperture: 19mm9. Eyepiece aperture: 15mm10. Diameter of exit pupil: 3.7mm11. Measuring range: 800m/1000m/1500m12. Material: plastic + electronics13. Temperature range: -10 to 50 degrees Celsius14. Protection level: IP5415. Battery capacity: 750mah / 3.7v16. Power supply: USB charging / built-in lithium battery17. Measuring range: 500/700/1000 meters18. Battery life: Can be charged/discharged 500 times19. Product accessories: Host, cloth bag, USB charging cable, lanyard, certificate and warranty card, manual20. Dimensions: 105x66.4x38mm21. Weight: about 161g

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1. Rugged and durable, compact and portable, ergonomic grip, accurate and durable2. Infrared pulsed laser, just one touch3. Suitable for outdoor activities and measurement such as golf, hunting, electricity, forestry, etc.4. Anti-reflection green film blessing, 6 times magnification, still clear5. Rotating focus 6 degree diopter, myopia/presbyopia can be observed with naked-eye, no need to wear glasses6. Laser wavelength: 905nm7. Accuracy: 1m8. Objective lens aperture: 19mm9. Eyepiece aperture: 15mm10. Diameter of exit pupil: 3.7mm11. Measuring range: 800m/1000m/1500m12. Material: plastic + electronics13. Temperature range: -10 to 50 degrees Celsius14. Protection level: IP5415. Battery capacity: 750mah / 3.7v16. Power supply: USB charging / built-in lithium battery17. Measuring range: 500/700/1000 meters18. Battery life: Can be charged/discharged 500 times19. Product accessories: Host, cloth bag, USB charging cable, lanyard, certificate and warranty card, manual20. Dimensions: 105x66.4x38mm21. Weight: about 161g

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1. Multiple alarm modes, real-time feedback of gas test2. 2.3-inch high-definition color screen display, multi-interface display, all data are clear at a glance3. Built-in smart menu, convenient operation4. Fast warm-up, support Chinese and English switching menu, multiple alarms, highly sensitive probe5. Rugged aluminum portable tool case6. Sturdy alligator clip on the back7. Measuring range: Combustible gas, oxygen, carbon monoxide8. Battery capacity: 1800mah / 3.7v9. Power supply mode: USB charging10. USB port with protective cover11. Description: GT8211: Oxygen content detector, GT8212: Carbon monoxide detector, GT8210: Flammable gas detector12. Application: Gas detection13. Alarm method: Sound, light, vibration

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1. Multiple alarm modes, real-time feedback of gas test2. 2.3-inch high-definition color screen display, multi-interface display, all data are clear at a glance3. Built-in smart menu, convenient operation4. Fast warm-up, support Chinese and English switching menu, multiple alarms, highly sensitive probe5. Rugged aluminum portable tool case6. Sturdy alligator clip on the back7. Measuring range: Combustible gas, oxygen, carbon monoxide8. Battery capacity: 1800mah / 3.7v9. Power supply mode: USB charging10. USB port with protective cover11. Description: GT8211: Oxygen content detector, GT8212: Carbon monoxide detector, GT8210: Flammable gas detector12. Application: Gas detection13. Alarm method: Sound, light, vibration

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