Pressure Switch (PSI) – 110 a 135 pounds simple 3-wire hookup with

simple 3-wire hookup with

Available with blue crystal

Fits Freightliner M2 models from 2005 to 2016

Notes: 5 terminal

Fits: Year: 1989-2001

Pressure Switch (PSI) – 110 a 135 pounds simple 3-wire hookup withThe Hadley H13940S Air Horn Compressor Pressure Switch is a control device designed to turn an air compressor ON and OFF automatically based on the air pressure in the tank. As a compressor pressure switch, its standard electrical configuration is Normally Closed (NC) when the air pressure is low (or zero). Here's how it works: Low Pressure (e. g., below 110 PSI): The switch is CLOSED, completing the electrical circuit, and the air compressor runs to