Diffuser luminaire Design: Single diffuser luminaire round, diameter 490 mm, with LED modules for ceiling or wall mounting. Circular, deep drawn rigid steel housing, white powder-coated. Sprung steel catches are used to fix the diffuser. Fitted with RIDI-LED modules. Rectangular LED modules mounted on the luminaire base and additionally on the cap profile bracket for homogenous illumination of the diffuser. LED modules with copper coating on both sides for optimum heat distribution. 2-channel design (...-2K) with two LED drivers per luminaire. Two LED circuits are each actuated by a driver, allowing separate switching (50/50), e.g. for night lighting. In versions with radar sensor (...-RS) one channel (50%) is switched to the sensor. Electronic DALI converter for LED, 230 Volt, 0/50-60 Hz and internal connector block. Mounting: Direct ceiling or wall mounting without additional accessories. RUFO 490… Semi-circular acrylic glass diffuser made of impact-resistant, UV-stabilised PMMA. Satin finish on the diffuser surface. Impact resistance IK10.