Door and Window Sensor -, compatible with Apple HomeKit, connect via WiFi, door or window mounting, central unit required Do you want to defend your property reliably against thieves? If so, you'll want this sensor for doors and windows offered by Lifesmart. In order for the sensor to work, it will need to be connected to a central unit. For integration into a smart home system, you can connect it via WiFi. The LifeSmart Cube Door/Window Sensor is compatible with Apple HomeKit. LifeSmart Cube Door/Window Sensor Door and Window Sensor Key Features Protect your house from thieves You will know immediately about any opening of windows or doors Connection to this door and window sensor by Lifesmart is via WiFi Works with Apple HomeKit