The PC-102 is a dual channel switch that provides dual protection against seal failures and over temperature in submersible pumping applications. Both units have two form C isolated output relays and two LEDs, which illuminate when each associated output relay is energized. The sensitivity adjustment (4.7 to 100 kOhm) allows you to define the input impedance at which the output relays will change state. The sensitivity for the over temperature detector can be set to 4 kOhm with use of the DIP switches.