... DC Switching Power supply with 12W Maximum Output Wattage and Short-circuit Protection have UL,CSA,CE,TUV,GS,BS,SAA,PSE,EK, Key Specifications Maximum output ... DC output voltage: 3V (minimum); 24V (maximum) (selectable) DC output current: 0.3A (minimum); 2A (maximum) (selectable) Features: No load power ... , security equipment, small home appliances, and more Certifications: UL, cUL, FCC, CCC, CE, BS ...