... :215*115*65mm input AC:170-250V output power:500W,12V 2 years warranty 250W switching power supply(CE,ROHS,IP20)Option ... must according to the remark at the switching power supply. Power factor: Usually, he power factor switching power supply is 0.5-0.6, ... load couldnt exceed the maximum output power remarked at the power supply. The frequent switching power supply and the unreasonable environment would ...