Tuya WiFi Door Open Close Detector:This smart door and window sensor connects to your 2.4GHz WiFi network and works with the Tuya Smart Life APP, allowing you to monitor the open/close status of doors, windows, cabinets, and more in real time. Ideal for enhancing home security and peace of mind. Smart Life APP Remote Monitoring:Receive instant push notifications on your smartphone whenever the door or window is opened or closed. Check history logs, share device access with family members, and manage multiple sensors from one intuitive APP interface. Home Security Protection:Use this door open close detector as part of your home security solution. Set customized alerts and scenes so that when a door or window is opened unexpectedly, alarms and notifications are triggered to help deter intruders and protect your property. Door Window Sensor for Multiple Applications:Compact and discreet design suitable for doors, windows, drawers, wardrobes, and office cabinets. Perfect for homes, apartments, offices, shops, and rental properties that require simple but effective entry monitoring. Scene Linkage with Other Smart Devices:Link the Tuya WiFi door open close detector with other Tuya/Smart Life devices. For example, set the lights to turn on automatically when the door opens, or trigger if a window is opened during specific hours for enhanced security. Specifications: Use 1.5V 2*AAA battery (not included in shipment) Due to different batches, there may be differences in product appearance and printed text, which will not affect use Color: Black Material: ABS Package Contents: 1*Smart Door Sensor kit