Johnson P66ABB-21C Fan Speed Control 140-350# Start Voltage: 16%

The P66 is a pressure-actuated electronic motor speed controller. By directly sensing pressure, this device electronically varies the speed of a fan motor. This control can be used with a single-phase permanent split capacitor and shaded pole motors that are approved by the motor and equipment manufacturer for speed control applications. To prevent overheating, use a ball bearing motor with a service factor of at least 1.25.