Features:1,Website: , High brightness, even light output2, Instant start, no flickering, no humming3, No electrical wave4, No RF interference5, 5 years warranty6, CE RoHS Approved Product DiscriptionModel NO:EST-PN-72W-60120Wattage (w)72WInput Voltage Range (V)100-277VPower Fact (pf)>0.95OP. Frequency (Hz./kHz)50Hz 60HzLuminous Efficiency (LM/W)>100LM/WLuminous flux7200lmColor Rendering Index (CRI)>80Color Temperature4000-5000KLife Span50000 hoursHumidity Operating10-80%Humidity Storage10-80%CRI>80Working temperature-20℃-40℃;IK CodeIK01IP CodeIP40Luminaires ClassClass ⅡFixing WaysSuspending Mounting Embedded/in-builtApplication:Commercial and industrial occasions such as officesConference/meeting roomsFactoriesHotelsResidencesSchoolsCollegesUnversitiesHospitals etc.