System Sensor DST10 Tube 70"wc SPST pressure switch is

70"wc SPST pressure switch is factory-calibrated to ensure the draft inducer motor is moving sufficient combustion air before allow the ignition sequence to proceed

What does the -1

67" WC threshold

the 632183R provides the millivolt stability needed to prevent nuisance shutdowns in Nordyne furnace units and Miller mobile home applications

Using a non-spec switch can lead to unsafe operating conditions or nuisance shutdowns

System Sensor DST10 Tube 70"wc SPST pressure switch isThe System Sensor DST10 is a heavy duty metal duct sampling tube engineered for duct smoke detection across wide span HVAC systems. Designed for use with both conventional and intelligent duct detectors, specifically the InnovairFlex series, this 10 foot rigid sampling pipe ensures consistent air pressure flow to the sensor chamber. It is rated for duct widths from 8 ft to 12 ft, providing reliable smoke detection airflow in large scale commercial air