Input/output specifications: Input voltage: 100v-240v ac, 50/60hz Range voltage: 90v-264v ac, 47-63hz Output power: 0 ~ 5w Output voltage: dc 3.7v ~ 24.0v Output current: 100ma ~ 1200ma Over voltage protection: 120%min Over current protection: 120%min Short protection: auto recovery Load regulation: ¡à5% Mtbf: 50000h Operating temperature: 0 ~ 40¡æ Storage temperature: -20 ~ 85¡æ Operating relative humidity: 5 ~ 95%rh Withstanding voltage: ac 3000v(min), 5ma(max). Insulation resistance: dc 500v 100m¦¸(min).