disc-style OEM furnace limit switch engineered for high-precision thermal monitoring in residential and light commercial air handlers

High-Visibility LED/Neon: The green lens is optimized for high-lumen output to ensure visibility in dimly lit industrial environments

These parts are technically identical

clean the rod with a non-conductive abrasive or check the system ground

it includes 9-inch color-coded primary lead wires and screw terminals on the secondary side for secure low voltage transformer wiring

KMC Controls STE-1451 Sensor disc-style OEM furnace limit switchThe KMC Controls STE 1451 is a professional grade outside air temperature sensor designed for precise ambient monitoring in building automation systems. Built around a high accuracy 10,000 ohm Type III thermistor, this sensor provides the reliable resistance to temperature data required for critical HVAC functions like economizer control, chiller dispatch, and weather compensated heating resets. The STE 1451 is housed in a rugged, NEMA 4X (IP65)