Presence detector installation 1 channel KNX.1 channel presence detector for ceiling installation for brightness and motion dependent switching. With integrated bus coupler for connection to the KNX bus. Basic setting directly on the already installed device without dismantling possible or optionally via the remote control. Functions: ON/OFF, dimming value, dimming value when present and absent, time functions, scene, scene when present and absent. Master/slave function for using several presence detectors in the room. The device can be programmed via the KNX ETS or KNX easy.