... Power supply with 12W Maximum Output Wattage and Short-circuit Protection have UL,CSA,CE,TUV,GS,BS,SAA,PSE,EK, Key ... current: less than 0.25mA Short-circuit protection Over-current protection Over-voltage protection Open-circuit protectionHumidity: Operating humidity: 15 to ... network information, security equipment, small home appliances, and more Certifications: UL, cUL, FCC, CCC, CE, BS, CB, GS, FCC ...