Trust Smart Home 71231 Wireless Sensor with Reverse Action Function, to Automatically Switch Lights/Devices When a Door or Window is Opened/Closed

Compact and attractive Design that can easily be placed anywhere (indoors) Switch lights/devices when a door or window is opened/closed Reverse action function, automatically switch off ventilation/devices when a window is opened Saves energy: lights/devices are switched off automatically after 1, 5 or 10 minutes Long battery life with low-power indication Transmission range up to 30 meters Including battery, double sided tape and screws, Weight: 0.05952481074 Pounds, Manufacturer: Trust