... compensation and energy saving 3.Working temperature:-40-+50 degrees 4.CE,EMC,REACH,IP67 Waterproof Constant Voltage 5v Led Power Supply ... efficiency and energy saving.3.Maintain constant high conversion efficiency even the load changes.("CCE"for short)4.Automatic clamping circuit protection ... toleranceMeet with EN61000-4-2,3,4,5,6,8,11;EN55024,EN61547,A-class of light industry(surge 4KV)Insulation ...