Zigbee Door and Window Sensor 3 Pack, Wireless Mini Contact Sensor | Home Automation, Requires Hub, Zigbee Connection, Kid Safety, Compatible with Apple HomeKit, Alexa, Works with IFTTT

A hub is necessary and sold separately. (Not compatible with hubs from other brands. ) Requires a secure 2.4GH z Wi-Fi connection for Hub M2, M1S, E1, M1S Gen2, G2H Pro, and G2H; or 2.4 /5GHz Wi-Fi for Camera Hub G3. (Hub M2 also supports wired Ethernet via RJ45. )
(*Note: For a stable connection, position the main unit of the Door and Window Sensor so the gap to the accessory unit does not exceed 22 mm. ) [Proximity] To ensure a robust connection, keep the Door and Window Sensor within 400 inches of the Zigbee hub, and the hub within the same range from the Wi-Fi router. Also, confirm the hub and the router are on the same local area network (LAN). Zigbee2MQTT and similar third-party USB dongles are not officially supported. Full product functionality might be limited or unavailable. [Unauthorized Entry Detection & Home Automation] The Zigbee Door Sensor notifies your phone and activates the hub's local alarm upon unexpected door or window openings. It also manages other devices based on door or window status. Easily monitor your door, window, kids' room, and any area where you desire alerts. ***Requires a hub, not a third-party hub. [ 0.86 Inch Wide Gap Allowed] The Door and Window Sensor works with most types of doors, windows, and other fixtures with a similar mechanism, such as drawers and cabinets.
(Note: Please ensure the surface where you plan to attach the Zigbee Door and Window Sensor is flat and suitable for adhesion, and the permitted gap is up to 0.86 inch. ) The main sensor unit dimensions are 1.61 * 0.87 * 0.43 inch, and the magnet dimensions are 0.79 * 0.39 * 0.39 inch. [Hands-Free Voice Control] Compatible with Apple HomeKit and Alexa for a hands-free experienceno need to go downstairs or pick up your phone again. You'll always know whether your home door is opening or closing. (The Door and Window Sensor is not compatible with SmartThings currently. )