Available in 1/6hp, 1/5hp, 1/4hp, 1/3hp, 1/2hp, 3/4hp to 1hp. it can save ... a greater range of operability choices, and to minimize noise 1. 120V or AC240 (180-270V), 50/60Hz2. EC ... shaft. Model VFrequency (Hz)Rated Speed (RPM))Speed control113-1/3hp22050 / 6013000-10V/PWM Energy saving of EC Motors ... sensors, pressure sensors and EC control software, etc. 1/2hp brushless DC fan coil unit EC motor in fan ...