The AccuAir ENDO Compressor Analog Adapter Harness is used to connect any ENDO-CVT or AccuAir-endo-ct" target="blank">ENDO-CT tank to your existing management. ENDO valves cannot be controlled without it.
The LED on this box tells you how the compressor is operating and if there are any errors.
It is not required if you use an AccuAir-endo-ct" target="blank">ENDO-CT with any non AccuAir control system. It can be beneficial for the use of the status LED.