Specifications: Input voltageDC3V LR03*2 Battery: AAA*2 (not included)Standby current 10uAAlarming current 15mALow-voltage notification 2.5VWireless Technology:ZigBeeTransmission Frequency:2.4GHzMagnetic control distant : 15mmWorking temperature -10-55Working humidity 90%RHFeature:1.Tuya Smart ZigBee Door&Window Sensor:A Tuya ZigBee Wireless Gateway Hub is a must to work with the door&window sensor,as well as a variety of ZigBee smart products.2.Real-time remote monitoring:Whenever and wherever you are,once Door/Window Sensor detects external objects or animals, you will receive a notification by smart phone.3.Wide Applications:Apply the smart door/window sensor to different scenes,your bedroom,garage,bathroom,garden and anywhere you like.4.Battery powered for low power consumption;New designed with Low battery reminder supported.5.Easy installation with double-side tape,simply stick it anywhere you like to protect your house security.Notes:This product needs to be used with Tuya zigbee gateway