the L200-40F 7" limit switch is a standard 1/2-inch snap-disc style often found in Armstrong

Its robust design facilitates a direct-fit replacement

this blade features a 1/2" bore

Common Questions & Technical Support: What is the best way to determine if my valve needs a rebuild or a new coil

Precision Contact Switching: Features 4-pin contacts housed in a heat-resistant shell to minimize electrical arcing and extend the life of the compressor starter

Resideo TH6210U2001 Thermostat 319852-301 the L200-40F 7" limit switchThe Resideo TH6210U2001 is a professional grade, programmable T6 Pro thermostat engineered for high reliability control of 1 Heat 1 Cool conventional systems and 2 Heat 1 Cool heat pump systems. As the direct replacement for 2220NC, this model utilizes the standardized UWP mounting system, allowing for rapid field swaps and a consistent installation footprint across the entire T Series line. Whether configured for 7 day, 5 2, or 5 1 1 day scheduling,