Please note: youll need a Panasonic Smart Hub to get this up-and-running. You can buy a hub on its own or as part of a Starter Kit. The easy to fit window/door sensor detects when the corresponding window or door is opened. Easy to fit with One Push pairing. Connect to other devices in the range. Monitor your home from your smart device. No monthly fees. A triggered window/door sensor can be set to send notifications to your smart phone or tablet. Access your system from the comfort of your sofa or remotely when away or on hoiday. The window/door sensor can wirelessy connect to other optional smart home accessories which can enable it to activate a wide range of potentinal reponses. For example switiching on or off appliances that are attached to a smart plug. Compatible with iOS and Android operating systems. App needed for use: panasonic home network. Operates over mobile internet. Operates over wi-fi. Requires wireless router for use. Detects occupancy. Sets schedules for devices. Components include 1x window/door sensor, 1xcr2 battery, 4x screws, 3x double sided tape. Batteries required 1 x (included). Size H10.2, W3.1, D2.2cm.