SONOFF ZigBee WiFi Door Window Sensor SNZB-04, Burglar Alarm for Home Security, ZBBridge Required, Batteries Included, Compatible with Alexa/Google Home

✔ The SONOFF wireless door/window sensor can be installed on your door or window to let you know if your door or window is open or closed, which means an additional level of security in your home. On your mobile phone, both the status of opening and closing the door/window are synchronized, so you no longer have to think about whether the door/window is closed or not.
✔A SONOFF ZigBee bridge is required for this. The sensor gives you the ability to create scene linking between ZigBee and Wi-Fi devices. This sensor is able to assist you in creating a smart home. Works with SONOFF ZigBee bridge, you can set a scene to illuminate your hallway immediately as soon as the door is opened.
✔ Easy installation for easier setup, installation with 3M adhesive (included) saves you time. The application can also extend to sprawling areas such as drawers, garage doors, blinds, etc. Simply stick it anywhere two things connect and the area is always secured, even if you do not monitor it.
✔ Share the sensor with your family so they can quickly control and monitor your home together. Review of 3 months of history records.
✔ The camera function can be activated on the sensor side in the eWeLink app, so you can also clearly see who is entering your home; you can even scare the stranger with the two-way audio function and ask them to leave your home immediately.