About the Model 9120 – RPS:

 

The Model 9120-RPS is specifically designed to read two SSi Gold Probes, installed in the same furnace. The Model 9120-RPS controller, a 24 VDC power supply, and two 24 VDC relays are mounted and wired on a piece of DIN rail for easy mounting by the customer. Two other components included with the Model 9120-RPS are the operator interface and the cable connecting the operator interface to the Model 9120-RPS.