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The ITR-9 series of AC fan speed controllers are designed for single-phase voltage controllable motors with a maximum current capacity of 10 A. With advanced Triac technology, they adjust fan speed by varying the motor voltage via phase angle control.
The minimum speed is adjustable via an internal trimmer. There are two start-up modes, kick start and soft start. The motor can be activated or deactivated via the integrated ON-OFF switch.