... -circuit protection 3.Warranty:2 years usa plug ac-230v power supply 12v 1 amp : Input Voltage100~240VOutput Voltage3~24VOutput Current2A ... no output, etc Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led indicator, low ripple ... , etc Finished products full inspection: to make sure every unit with power, no high voltage, no low voltage, no bad led ...