the 12783 is the direct replacement for 43-25133-12

The corrosion-resistant probe protects the sensing element from oxidation and contaminant buildup

When you are troubleshooting a unit that is tripping on high temperature

When diagnosing furnace pilot light problems or water heater pilot issues

Does this include terminal screws or lugs

Schneider Electric (Barber Colman) 21-933-1 Cover the 12783 is the directFor field technicians maintaining legacy pneumatic systems, the Schneider Electric (Barber Colman) 21 933 1 Cover provides a standardized replacement solution for aging or damaged thermostat faces. This gray plastic cover is engineered as the direct successor for a wide array of vintage components, including the 21 933, 21 934, 21 939, and high frequency units like the CT 12 and CT 921. Designed for 2x2 dial type pneumatic room thermostats, it