Homematic IP simple interface for a conventional switch This interface is needed so that you can use a tried-and-tested push button, switch or contact to control Homematic IP components. Due to its compact size, it is often installed in the box directly behind the switch. It is wired to the switch and is allocated to the component that is to be controlled via the app or WebUI. It is assigned the desired function. - Requires connection to the Homematic IP Access Point or CCU3 central control unit - Included: IP one-channel flush-mounted IP contact interface with a battery, connection cable, user manual - Power supply: 1 x 3 V CR2032 - Current consumption: max. 30 mA - Radio frequency: 868.0 - 868.6 MHz, 869.4 - 869.65 MHz - Radio range: 280 m outside - Ambient temperature: + 5 °C to + 35 °C - Weight (incl. battery): 14.5 g