... protection 3.Warranty:2 years usa plug ac-230v power supply 12v 1 amp : Input Voltage100~240VOutput Voltage3~24VOutput Current2A maxPower18W ... , no output, etc Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led indicator, low ripple ... level II standard.100% full load burn-in test for 1 hour, doing shock test per 10 minutes for 20 second ...