KB Electronics Solid State Variable Speed AC Electric Motor Control 10.0 Max amps 230V # K177-2010 Designed for Standard 4" x 4" Electrical Wall Box 10.0 Max amps 230 Volts; UL & CSA Approved Not to be used with Capacitor Start or Capacitor Run Motors Applications: Fans, Blowers, Fireplace Blowers, Attic Fans, Humidifiers, Ventilators