6560-423, Sundance, Balboa Systems Temperature Sensor.

Use 6540-228 Oring (sold separately)

The Temp Sensors are located in the filter compartment on the side. They are unscrewed from the inside of the tub and the wire is fed through the tub into the equipment compartment. Follow the wire to the PC Board. To feed the new sensor, we usually drain the tub below the hole and pull the old sensor out a couple of feet into the tub, cutting the old sensor head off, we tie on the new sensor (connector end) to the old wire and pull the wire through into the equipment compartment.
The connectors on the Temp Sensor are attached to a pc board connector that is located on the PC Board (usually at the top). 

Additional Information

For All Sundance Temperature Sensors Click Here! *We ship select Sundance parts with FREE GROUND SHIPPING with a $4.95 handling fee on all orders. ( Contiguous U.S. only). Please see our Shipping Policy and our Low Price Guarantee found on our Home Page.