KNX radio button 4-way quicklink Q.1/Q.3 polar white, velvety. KNX radio button 4-way quicklink for plugging into suitable inserts. Integration via KNX radio media coupler AP into the KNX TP system. Tool-free quicklink configuration via buttons and LED display, with configuration and function button. For manual operation or remote control of supported functions via KNX radio. Functions for the button areas top/bottom or left/right can be freely configured as a receiver to control the connected load and as a transmitter to remotely control a blind, for example, reset function (to factory setting), sending and/or receiving behavior can be configured. With configuration and function LED, LED attachment/insert compatibility display, control surfaces can be configured as one- or two-surface operation, storage of scenes can be locked. Extended operating options on 1-way inserts through 2 additional, freely configurable radio channels. quicklink functions: switching, dimming, blinds, 2 scenes, timer, button normally open, memory. ETS additional functions: +6 scenes, 1 button control up/down, operating mode on/off, dimming value, brightness display, button, status display, forced control.