It can detect the opening and closing status of doors and windows and send a notification to your phone via the app The windows door sensor consists of a sensor subject and a magnet Easy installation and use: it is small and elegant, it can be installed on windows, doors, sheds, cabinets, gates and commercial sash windows The door window sensor is suitable for home, office, and other places Attention: This sensor is only compatible with the gateway in our store. It is not compatible with other zigbee devices. If you purchase this sensor, you need to purchase our gateway to use it properly. › See more product details