Tuya WiFi Smart Door Sensor Wireless Magnetic Door Open/Closed Detectors Automation Home Security Alarm Via Alexa Google Home<br> {2.4GHz WiFi One-click connection and easy setting}<br> you can easily realize the intelligent control of home appliances, simple operation Without the home gateway,easy to use. The 2.4G Hz protocol is more stable, faster, and more convenient.<br> {Check the status of doors and Windows}<br> When the doors and Windows are open or closed, the device will trigger and push the notification to the mobile phone.<br> {Linkage Alert with more sensors}<br> Set scenario: In leave-home mode, if someone breaks in, the device will trigger and push the notification to the phone, and the IP camera (not included) will shoot the video;Open the lights automatically when someone opens the door.<br> {APP remote control}<br> Home in hand, anytime and anywhere<br> {Easy to install}<br> small volume, easy to install adhesive installation, can be flexibly placed in a variety of doors, Windows, drawers and other places, will not destroy the appearance and structure of the original furniture<br> specifications:<br> Input voltage: 3V LR03<br> Static current: 45 uA<br> Alarm current: 130 mA<br> Low power undervoltage: 2.4V<br> WiFi802.11 b/g/n