Active Air Fan Speed Controller | Duct Fan Adjuster 500W 5A 120V (ACSC)

The Active Air fan speed controller dials the RPM of ball-bearing inline and centrifugal fans up to 500W (5A) on 100-120VAC, cutting noise and power draw while steadying grow-room airflow. This inline fan speed controller uses a simple knob and an internal auto-resetting breaker to protect the motor.

Active Air Fan Speed Controller for Inline and Centrifugal Fans

The Active Air fan speed controller tunes the RPM of ball-bearing inline and centrifugal fans with a simple knob, delivering smooth, flicker-free adjustments that protect the motor and hold your environment steady. It's rated for up to 500W (5A) at 100-120VAC, covering most small to mid-size ventilation fans. An internal auto-resetting breaker guards against overload, and the compact handheld body sits wherever it's easy to reach.

Inline Fan Speed Controller That Protects Your Motor

Growers wire this inline fan speed controller between the fan and power, then dial RPM to the room — lower speed for the dark cycle, higher when the lights and heat load climb — which trims noise, eases negative pressure, and reduces motor wear versus constant full-speed running. It pairs naturally with carbon filters, ducting, and air-cooled hoods to fine-tune pressure through the system. Use it with ball-bearing inline or centrifugal fans within the power rating; it's not for booster fans or squirrel-cage blowers.

Key Features

• Variable knob control: Smooth, flicker-free RPM adjustment down to a set idle speed.
• 500W (5A), 100-120VAC: Handles most small to mid-size inline and centrifugal fans.
• Auto-resetting breaker: Internal electronic breaker guards against overload and premature wear.
• Motor-friendly circuitry: Stable adjustments protect the motor and steady the environment.
• For ball-bearing fans only: Use with inline/centrifugal fans, not booster fans or squirrel-cage blowers.

Specifications