22169941 DALI-BV2 Power supply for one DALI system for up to 64 bus users or 100 DALI loads (max. 200mA). The power supply is short-circuit proof and can withstand an external voltage of 230/240V. The mains voltage is connected on the input side, and the DALI control line on the output side using screw-terminals. Unit made of halogen-free, flame-retardant polycarbonate. For installation in conduits or in ceiling recess at an authorised ambient temperature of 0 to 50°C. IP20 degree of protection, dimensions: 101.5 x 29.5 x 51mm.