terminals 4 and 6 are "dummy" terminals used for wire anchoring and have no electrical connection to the internal relay coil or contacts

Versatile Power Options: AC/DC supply compatibility eliminates the need for dedicated DC power supplies on retrofit jobs

Precision Sensing: Utilizes a high-sensitivity nylon sensing element with a fixed 5% RH differential to prevent equipment short-cycling

High Flow Performance: The 4

Texas Furnace(Consolidated Ind) 300919 Fan/Limit Freon terminals 4 and 6 areThe Texas Furnace (Consolidated Ind) 300919 Fan Limit switch is a critical OEM replacement part designed for forced air heating systems requiring a precise 8 inch insertion length. Built for high stakes furnace safety and blower control, this combination controller regulates the fan motor cycles based on plenum temperature while providing a primary high limit safety shut off to prevent heat exchanger damage. As a professional grade HVAC temperature