Made by Balboa
Manufacturers Part Code: 30288 or 30337
This Harness works on the older control systems (Balboa M3 Control systems) it plugs directly onto the PCB and is easy to replace if the old one is faulty.
The probes are:
1/4" x Thermostat which fits into a thermostat mount either in the body of the hot tub or spa or into a thermostat mount in the plumbing.
3/8" x Hi-Limit Sensor which mounts into a metal retainer under the heating unit.