Designed with heavy-duty screw terminal connections

Common indicators for replacing a furnace flame sensor include intermittent ignition cycles or short-cycling where the furnace shuts down after just a few seconds of burner activity

Using a CCW blade on a CW motor will result in improper airflow and potential motor overheating

Heavy-duty contacts designed for high-frequency switching and industrial-grade durability

supporting heat pump reversing valves energized in either heating or cooling modes

Crandall Stats & Sensors AT-11-404-CSS Thermostat Cover Designed with heavy-duty screw terminalThe Crandall Stats & Sensors AT 11 404 CSS is a direct AT 11 404 cross reference replacement designed for commercial and institutional HVAC environments. This thermostat blank cover provides a professional solution for concealing wall damage, redundant wiring, or decommissioned control points following a pneumatic to electronic conversion or system upgrade. For technicians performing retrofits, this TSTAT blank cover ensures a flush mount against the