LiFeSafe PRO SURF RDDLHO RA C EM3 NM DA is a high output DALI addressable round surface mount standalone luminaire. Non-maintained self-test 3Hr emergency duration with LiFePO4 rechargeable batteries. Interchangeable lens for open area or corridor beam. 3.5W - 450lm, 20mm conduit entry points, IK06, IP20,Class II construction 6-year warranty.