Feature: 1. The temperature and humidity sensor has the advantages of real‑time monitoring of temperature and humidity, abnormal reminders and intelligen linkage. 2. The temperature and humidity changes can be sensed in real time. Lithium battery power supply, long life and safety, cycle life is more than 2000 times. 3. Lithium batteries have the advantages of energy saving and environmental protection, fast charging, and only need 1.5 hours to fully charge the battery and save energy. 4. The temperature and humidity sensor is used with gateway and infrared remote control (not include gateway and infrared remote control), allowing you to have a more comfortable living space. 5. Through the APP, the temperature and humidity sensor can be linked with other smart devices in the home to improve indoor cooling, heating, dryness and wetness. Specification: Item Type: Temperature Humidity Sensor.Material: ABSSize: Approx. 67 x 64 x 21mm/2.6 x 2.5 x 0.8inBattery Capacity: 3.7V 450mAh (built-in battery) Operating Temperature: -20℃ - 60℃ Working Humidity: 0 - 100%RH Charging Interface: DC 5V = 1A(Micro USB) Connection Mode: For ZigBee (need to be used with gateway (not include) ) How to Use: After power on, the humidity sensor is used with the gateway (not include) to monitor the current ambient temperature and humidity in real time. After collecting the data, the temperature and humidity data can be uploaded to the gateway (not include) through for ZigBee wireless network, and the gateway (not include) then forwards the data to the server. Package List: 1 x Temperature Humidity Sensor1 x Reset Pin1 x USB Cable1 x Manual1 x Double Side Tape