Products Performance: 220V/50Hz/60Hz or 120V/60Hz Protection: IP45 Insulation class B Thermal protector of VDE or UL approval Noise: noise of air blower pump with a nozzle 72dB. Recognize certified: CE, EMC Parts and Materials: Pump casing: High temperature resistant Reinforce plastic Air switch: 15A, 250V(Optional) Carbon brush: using import materials