this SPNC (Single Pole Normally Closed) switch is engineered to monitor the negative pressure generated by the furnace inducer motor

Included with an L-shaped mounting bracket

ensuring a tight seal after each lift

ensuring reliable data for system 450 controls

Can this switch be used in 24V circuits

Supco F7799 Control Board this SPNC (Single Pole NormallyThe Supco F7799 Fan Control Board serves as a critical direct replacement for 1088977 (and HQ1088977A1), commonly found in HVAC systems manufactured by brands such as Tempstar, Heil, and Comfortmaker. Specifically engineered for condenser units, this board regulates fan speed based on ambient outdoor temperatures to maintain stable head pressures for system efficiency. This furnace control board supports high amperage applications with an output low