Wireless window contact with battery, white. Quicklink window contact for surface mounting as a wireless solution in the 868 MHz range with quicklink wireless products as a tool-free quicklink configuration using buttons with LED display or integration via KNX wireless media coupler into the KNX-TP system. Power supply with 2 AAA LR03 1.5V batteries. The low battery message is displayed on the front LED display, and the configuration remains when the battery is changed. Connection of an external reed contact possible. Frost protection mode of the heating, upward movement of the roller shutter, scene can be controlled via the KNX object. Activation/deactivation of the automatic mode is possible using the button on the front of the device.