Features 1、Lightweight and portable, stable performance, temperature and humidity can be measured. 2、Built‑in Bluetooth, which can be connected to mobile phones and controlled by APP. 3、Support dew point temperature measurement, wet bulb temperature measurement, high accuracy, low power consumption. 4、The LCD screen with backlight allows data to be read even in a dark environment. 5、Suitable for factories, laboratories, warehouse management, food hygiene, air conditioning systems, etc. Specification Item Type: Temperature Humidity Meter Material: ABS Ambient Temperature Range: -20℃~70℃ (-4 ~ 158℉) Ambient Temperature Accuracy: ±1℃ Humidity Range: 0%~100% RH Humidity: Accuracy ±4% RH Dew Point Range: -20℃~50℃ Dew Point: Accuracy ±2℃ Wet Bulb Range: -20℃~50℃ Accuracy of Wet Bulb: ±2℃ Power Supply: 3 x 1.5V AAA Battery (Battery Not Included) Working Current: 13mA, 17mA (Backlight) Response Time: 30S Bluetooth Communication (Application): Support Record 999 Sets of Data: Support ℃/℉ Selection: Support Data Retention Display: Support Maximum/Minimum: Support Automatic Shutdown: Support Alarm Setting: Support Automatic Shutdown: Support Package List 1 x Temperature Humidity Meter (Battery Not Included) 1 x Instruction