Temperature and Humidity Data Logger USB Built in Recorder LCD Display Sensor DC 5V(26W Group Data ) Item Type: Temperature and Humidity Data LoggerMaterial: ABS Equipment Power Supply: DC5V power supply or battery power supply Battery: 1 x 18650 battery 2500mAh (not included) Recording Interval: 5s-18h Measurement Update: 2-255 seconds can be set Battery Life: 1 full charge device can work continuously for 1 year Maximum Battery Cycle Charge and Discharge Times: 1200 times Measuring Temperature Range: -20-60℃ (-4℉-140℉) Measuring Humidity Range: 0-95%RH Measurement Accuracy: ±0.2℃ (25℃) typical value (temperature) ±2%RH (5~95%RH, 25℃) typical value (humidity) 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.LWH: Approx. 120 x 113 x 33mm / 4.7 x 4.4 x 1.3in