Compact control IP20 module for automatic power reduction / brightness reduction for night-time. The device has an integrated bus supply (20mA) for up to 7 DALI luminaires. Possibility to extend up to max. 64 luminaires through the DALI Expander (S.2494). 2 operating modes are supported: - Operating mode B1: power reduction through mains phase or control phase; - Operating mode B2: power reduction using virtual midnight calculation. All necessary settings can be made using rotary and slide switches. The device must be located before the DALI luminaire inside an electrical cabinet / waterbox / junction box.