This Fan Speed Controller was designed especially for centrifugal fans. This means it will help prevent damage to fan motors, ensuring longer life. (Meant for use with brushless motors, and all inline fans, not booster fans).
It will correctly and precisely adjust the speed of centrifugal fans without causing the motor to hum. This controller is more sensitive than any on the market, and is compact and built to last.
Features + Internal, electronic auto-resetting circuit breaker + State-of-the-art electronics throughout + Rated for 350 Watts Max + 120VAC voltage capacity + 1-year warranty