desc ription product model: KWT-K2403 product specification: 12V4A product dimension: 105.1*44*23.4mm PCB material: fiber application range: air cleaner, household electrical appliance, electrical decoration and so on electric capability: 1, input voltage(AC): 100-240V 2, input frequency: 50/60Hz 3, input current(MAX): 0.3A 4, output voltage(DC): 12V 5, output current: 3A 6, output ripple: <150 7, efficiency: ≥85% 8, operating frequency: 70KHz 9, unseal time-lapse(MAX): 1000ms 10, output rising time: 20ms protection function : automatize over-current & over-voltage protection capability testing : 1, high-voltage testing: 3-4KV 2, insulation impedance: 100MΩ500VDC 3, aging testing: >4hr environmental characteristic 1, operating temperature: <85℃ 2, storage temperature: -20℃?0℃ 3, relative humidity: 20% product certification 1, through the authentication of "CCC" "CE(TUV)" "UL"