Item Type: Door Sensor Material: ABS Battery Capacity: 450mAh (built-in) Working Temperature: 40-85 (industrial grade) Working Humidity: <85%RH Connection Method: For ZigBee Charging Interface: DC5V==1A (Micro USB) Package List 1 x Sensor 1 x Magnet 1 x Manual 1 x Reset Needle 1 x Charging Cable 1Door and window sensors respond quickly, can effectively guard against theft, respond quickly, and protect the safety of the home. 2The antitamper alarm function is connected through the mobile app, and if the alarm is triggered, it will be pushed to the mobile phone immediately. 3It is convenient to use, supports intelligent scene control, linkage scene setting, and supports sound and light linkage voice control. 4Sturdy and durable, highquality ABS material, can work efficiently at 4085 (industrial grade) temperature. 5Long battery life, builtin 450 mAh battery, can be used for a long time, avoid the trouble of frequent charging.