Rubix Linear - 1500mm x 300mm, Recessed linear luminaire, white powder coated steel body, individual cells with opal surround trim for precise optical control. Options: E3 - Emergency control gear (661 lumens output) ST3 - Emergency Selftest AT3 - Emergency Autotest S - Switch Dimming D - Digital Dimming (DSI) A - Digital Addressable Lighting Interface (DALI) C - Bi-Level Dimming (Corridor Function)* H - High Frequency Dimming (Analogue 1-10v) R44 - Daylight regulating and Occupancy Sensor RAS - Reacta Air Wireless occupancy and daylight dimming RLS - Reacta-Link Wireless Presence & Daylight Sensor RCS - Reacta-Control Wireless, Presence BL - Black finish WH - White finish BLK - Black Cell Surround BLU - Blue Cell Surround ORA - Orange Cell Surround RED - Red Cell Surround