The Auto Cool Air Conditioning Controller will control the pressure side of your A/C system.  It will turn on the FAIL SAFE or turn on the A/C fan mode with the program connector.   With the Trip Level knob, you can select the percent of pressure were your fan will be turned on.  It has 10 LEDs that show percent of pressure from the 200 PSI pressure sensor.  Great for after market cooling systems that drive in hot deserts!   Includes the 200 PSI sensor.

Case size: 5 X 5.5 X 1.8 inches height