MOD Secure - 600x600, IP40, IK10 Recessed pull-up luminaire, white powder coated steel body, designed to be compliant with the requirements of the Department of Health Environmental Guide, Adult Medium Secure Services when installed with anti-pick mastic. Options: E3 - Emergency control gear (511 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)