Ingersoll Rand SSR 50-450 39797428 Red Eye Intellisys Controller. 39180419 Eprom Versions up to 1.9 The Ingersoll Rand 39797428 SSR 50-450 Red Eye Air Compressor Controller constantly monitors and displays the current status of your SSR compressor on the face panel. The Ingersoll Rand 39797428 automatically warns the operator if any of the preset parameters deviate from their set values and if required shuts down the compressor. The Ingersoll Rand 39797428 remembers the operating parameters prior to shutdown and therefore the restarting process is straightforward. Ingersoll Rand 39795588 Input Analogue Barrier PCB conditions input signal levels from the pressure and temperature transducers. 39182175 Starter Interface card provides output levels determined by the 39797428 control algorythm. Note: 39182175 Ingersoll Rand SSR 50-450 Red Eye Air Compressor Controller Starter Interface Board. This is the Part Number on the circuit board. The Part Numbers on the stickers are: 39807532 39857263 *Note that on the 39857263 pins 7 - 14 on terminal BTS1 are not used. Replacing wear components in the Ingersoll Rand 39797428 Air Compressor Controller guarantees our customers the highest quality rebuild product.