check the red reset button on the upper thermostat

maintaining factory specifications for safety and airflow management

Industrial Build: Engineered by Crown Engineering to meet heavy-duty specifications for commercial HVACR equipment

Always check the static pressure and filter condition when replacing a limit switch

Precise Modulation: The 50-second run time and 135 Ohm feedback ensure granular control over valve stems

Honeywell TR50-5N Sensor R-449A check the red reset buttonThe Honeywell TR50 5N Sensor is a high accuracy, Sylk enabled wall module designed for seamless integration with Spyder, Stryker, and CIPer Model 30 controllers. Engineered for demanding Indoor Air Quality (IAQ) monitoring, this multi sensor device tracks CO2 concentration, relative humidity, and temperature through a single two wire communication bus, significantly reducing terminal labor and cabling costs. Its NDIR CO2 sensor provides reliable, long