TriggerLinc is the world's first INSTEON magnetic contact sensor that wirelessly controls lights and appliances throughout your house. When magnetic contact is broken, such as a door or window being opened, TriggerLinc can do things like turn on lights, set the thermostat to its comfort setting, or trigger a custom event in HouseLinc 2. Gain the peace of mind knowing that you'll be alerted when the back door sneaks ajar or the side window slides open. Useful for doors, windows, drawers, sheds, cabinets, and anything else that opens, TriggerLinc is a wireless, easy-to-use solution for adding convenience and awareness to any INSTEON-controlled home. An AA battery is required and included. INSTEON is a low-cost home control technology that uses both the existing electrical wires in the home and radio-frequency to communicate. From lighting, appliance and thermostat control to integrated security systems, INSTEON allows you to manage your home the way you want - from a handheld remote, wall keypad, computer or web-enabled device like a smart phone. Easy to install and set up, INSTEON offers the flexibility and dependability to make life more convenient, safe and energy efficient. Note: The TriggerLinc uses RF for its communication. When controlling power line devices such as a OutletLinc, be sure to have at least one Access Point or dual-band device installed. These convert RF signals to power line and vice versa.