1,1 year warranty 2,suitable for USA 3,1 year warranty 4,White box, 200pcs/ctn, 52*32.5*32cm, Item quality parameter : ModelYK19Input voltageAC100-240V, 50/60HzOutputOutput connector5.5 X 2.1mm/Other, 120cm/optionalOutput voltage3-24V + / - 5%Outputelectric current0.5A-1.5ARipple wave(mVp-p): <1%Linear modulate±0.5%maxTemperature coefficient±0.02%/°CStart time≤3s(240VAC output,1o=100%)Guard time≥ ...