Graduate Recessed - 600x600, Recessed lay-in luminaire, white powder painted metal body, with gull-wing reflector and curved polycarbonate central diffuser. Options: LE3 - Lithium Emergency (586 lumens output) LS3 - Lithium Selftest LA3 - Lithium 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) R25E - Reacta 25, On / Off High Frequency R25C - Reacta 25, Corridor Mode* RC - Reacta-Control Wireless Module RCS - Reacta-Control Wireless, Presence RLI - Reacta-Link Wireless Module RLS - Reacta-Link Wireless Presence & Daylight Sensor RAS - Reacta Air Wireless Presence & daylight AH25 - Air handling (25 litres/sec) NL - Night Light