By integrating an internal microprocessor

and GKT2438K

Broad Pressure Window: Reliable operation from 5 to 150 PSI

allowing the system to resume operation once pressure stabilizes within the 20" Hg to 100 PSIG setpoint range

protected from direct sunlight

Trane SWT0977 Pressure switch 321702-401 By integrating an internal microprocessorThe Trane SWT0977 Pressure Switch is an essential OEM safety component designed for precise monitoring of combustion blower performance in negative pressure venting systems. This SPNO (Single Pole Normally Open) device, often cross referenced as Honeywell FS4171 1057 or C145526P01, is engineered to ensure the inducer motor is moving sufficient air before allowing the ignition sequence to proceed. Featuring a 1 4 compression connection and a calibrated