... ModelXYY-220XYY-220XYY-220XYY-220OutputDC output voltage12V12V24V24VOutput voltage tolerance±1%±1%±1%±1%rated output current4A5A2A3AOutput current range0~4A0~5A0~2A0~ ... Device or Machine; cctv camera ,security products, tablet , ipod , notebook , laptop adapter ,led light , led stript , led products . lead acid ... .100% full load burn-in test for 1 hour, doing shock test per 10 minutes for 20 second