cellular home charger CE ,UL,RoHS safe approvel switching power supply Protections:Short circuit protection;Over current protection;Over voltage protection;Thermal shutdown capability. Reliability:Burn-in: 100% full load, 40±5,4hours minLeakage Current :0.25Ma max, at 254Vac.Withstanding voltage: 3000Vac, 1minute, 10Ma.MTBF: meet MEL-HDBK-217F, over 50K hours,full load,25