DALI-2 input device, infrared presence detector with 40X5 m movement detection . : DALI-2 certified light and presence sensor for ceiling installation. Presence detection via passive IR element. Detection height up to 4 m. Large detection area for corridor applications up-to 40x5 m. Function display with LED. : Light sensor up-to 2000 lx. Quick and easy installation using spring clips. Integrated DALI bus power supply (no mains connection required). Several sensors can be connected to a DALI line. Can be integrated into lighting and building management systems that support DALI-2 sensors. Compatible with LEDVANCE VIVARES DALI light management system. Includes shutter accessory to optimize the sensor detection area. : Corridors. Stairways. : Surface mounting via SENSOR CM KIT. : All electrical connections must be made by a qualified person.. Disconnect mains before installation..