1.Factory directly supply 2.CE certification 3.253.7nm,185 nm 4.OEM service 5.Lifetime:8000 hours ... : 5W 10W 14W 18W 23W......240W, 320WVoltage: 110VAC, 220VAC inputWavelength: 253.7nm, 185nmBallast: electronic ballast offered. CE ULMaterial: high purity quartz ...