1. Ambient temperature range: -20-60 degrees Celsius / -4-140 degrees Fahrenheit; accuracy: about 1.5 degrees Celsius / about 3 degrees Fahrenheit2. Relative humidity range: 0-100% RH; accuracy: about 5% RH (20-80%RH) / 8% RH (other ranges)3. Wet bulb temperature range: -20-60 degrees Celsius (-4-140 degrees Fahrenheit); accuracy: about 1.5 degrees Celsius / about 3 degrees Fahrenheit4. Dew point temperature range: -20-60 degrees Celsius (-4-140 degrees Fahrenheit); accuracy: about 1.5 degrees Celsius / about 3 degrees Fahrenheit5. Display: four-digit display, up to 99996. Sensor: SHTC37. Sampling rate: 8 times/second8. Update speed: 3 times/second9. Automatic shutdown: 10 minutes (can be turned off manually)10. Operating environment: -10-50 degrees Celsius, relative humidity within 80%, indoor altitude less than 2000m11. Storage environment: -10-50 degrees Celsius, relative humidity within 70% (take out the battery)12. Power supply: 3 x 1.5V AAA (R03 / LR03) (not included)13. Display size: about 37 x 41mm14. Size: about 152 x 55 x 33mm15. Weight: 125gFeatures:1. Four kinds of parameter measurement, ambient temperature, ambient humidity, dew point temperature, wet bulb temperature, can display two lines of data at the same time2. High-precision temperature and humidity sensor, with fast sampling rate and update speed3. Upper / lower limit over-limit reminder: When the measurement is higher or lower than the set threshold, there will be a buzzer alarm sound and the alarm indicator light will flash4. High-definition large-screen display with white background light on the displayPackage list:- Host x 1- Cloth bag x 1- Protective cover x 1- Instructions x 1Specification: Package Weight One Package Weight 0.24kgs / 0.54lb One Package Size 21cm * 14cm * 4cm / 8.27inch * 5.51inch * 1.57inch Qty per Carton 40 Carton Weight 10.00kgs / 22.05lb Carton Size 46cm * 29cm * 41cm / 18.11inch * 11.42inch * 16.14inch Loading Container 20GP: 487 cartons * 40 pcs = 19480 pcs40HQ: 1131 cartons * 40 pcs = 45240 pcs