Ortech Odc-Sck Speed Controller for Next Generation Compact Series Fan

Using an AC fan, with this speed control you have intermittent and continuous ventilation. The sensor mounts into the fan with two pre-drilled holes in a standard receptacle. Accessible speed adjustment Simple plug fits into fan housing Can be installed with a new or existing fan Allows for continuous adjustable speed control as per Ashrae 62.2, with high speed override