Model number:Rsd-9003l-88em-c Brand name:Ristar Origin:China (mainland) Key specifications/special features: Led ceiling light rsd-9003l-88em Maintained 3 hours emergency options available to meet the sudden blackout in order to keep as normal use, rechargeable battery charged in ac within 12 hours, 30% nominal power cost duration 3 hours Battery (high temperature): 9.6v 1300ma ni-mh ht Emergency output: 30% nominal power Emergency duration: 3 hours Charge time: 0.9 Optical data Colors temperature Warm white, pure white, cool white to options Beam angle 120 degrees Lumen (â±10%)1300lm Lamp luminous efficiency72lm/w Cri Ra>80 Other properties Ip ratingIp54 Ik ratingIk10 MaterialsPc base + pc diffuser DimensionsΦ362*118mm Operating temperature -20 to +40 degrees Lifespan 30, 000 hours Warranty 3 years CertificationsCe/emc/rohs directive-compliant/saa Emergency data TypeMaintained Battery (high temperature)9.6v 1300ma ni-mh ht Emergency output30% nominal power Emergency duration3 hours Charge time