Securifi DIY Security System Zigbee Door/Window Sensor (1st Gen) - Monitor and detect when doors/windows open and close; Get instant alert notifications Simple 1 Minute Setup; No wiring required Receive instant notifications when any door or window opens or closes, protecting your home or office whether you are in or out Remotely monitor when any door/window opens or closes Monitor via Free Almond App on iOS and Android; Also visible via any standard web browser Compatible with Almond 3, Almond+ and Almond 2015 Routers. Not compatible with SmartThings and Wink Hubs.