Orion Fans (Dallas, TX) offers the OA11/22 fan speed control unit that provides precise airflow control. The field-adjustable, dual-channel phase control unit allows the user to control fan speed for single or multiple fan assemblies. The control units are designed for use with any AC fan or fan tray. The 120/220 VAC speed control unit allows users to specify and control fan noise, speed, and air delivery according to specific application requirements. Four user-adjustable speeds (off, low, medium, and high) allow for maximum control and flexibility with minimum setup time. The unit is designed with fan trays and equipment racks in mind, where noise versus airflow needs to be controlled according to immediate needs.

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