Item Type: Temperature and Humidity Data Logger_x000D_Material: ABS_x000D_Equipment Power Supply: DC5V power supply or battery power supply_x000D_Battery: 1 x 18650 battery 2500mAh (bring your own)_x000D_Recording Interval: 5s-18h_x000D_Measurement Update: 2-255 seconds can be set_x000D_Battery Life: 1 full charge device can work continuously for 1 year_x000D_Maximum Battery Cycle Charge and Discharge Times: 1200 times_x000D_Measuring Temperature Range: -40-80 (-40~180)_x000D_Measuring Humidity Range: 0-100%RH_x000D_Measurement Accuracy: _x000D_0.2 (25) typical value (temperature)_x000D_2%RH (5~95%RH, 25) typical value (humidity)_x000D_Uses: This thermometer and hygrometer is widely used in every link of the family housing, computer room, workshop, storage, drug store, laboratory, library, office, logistics cold chain and other places to monitor and record the environmental temperature and humidity._x000D_LWH: Approx. 120 x 113 x 33mm / 4.7 x 4.4 x 1.3in 1If record once in 10 minutes, once full can work continuously for one year. 2The recording interval, alarm interval, timing start and stop, upper and lower limits of temperature and humidity can be modified through software. 3Connect to the computer via a USB cable, the software automatically reads all the data in the device and generates a data curve. 4Equipped with a high?accuracy temperature and humidity sensor for accurate temperature and humidity measurement. 5The product has a large LCD screen, which can display real-time temperature and humidity values and other data. 6Built-in buzzer, with over-limit alarm function, can automatically change the frequency of recording alarms. 1 xTemperature and Humidity Data Logger 1 x External Sensor 1 x Sensor Bracket 1 x Data Line 2 x Wall Sticker