Manual control unit for up-to 25 lights, enables Tunable White lighting, exchangeable cover. : DALI-2 control device for installation in standard flush-mounted boxes. Rotary knob for manual light control. Up to 4 control devices can be connected in parallel to set up several control points. Automatic synchronization between control points. Number of DALI lights per control unit: up to 25. Cable length of the DALI control cable: up to 300 m. : Simple, intuitive operation. Manual dimming, switching and saving of light settings. Individual adjustment of the brightness level and color temperature. Interchangeable front cover with compatible light button covers of BUSCH-JÄGER, GIRA, JUNG, SCHNEIDER, BERKER, SIEMENS. Behavior after power interruption can be set. Mains powered (active mode) or DALI powered (passive mode) operation. Optional surface mount frame available. Compatible with LEDVANCE VIVARES DALI light management system (LEDVANCE DALI luminaires). : One-room solution for up to 4 access areas. Meeting and conference rooms. Restaurants. Shop lighting. Private homes. : All electrical connections must be made by a qualified person.. Disconnect mains before installation..