M7 style Sensor for the Cal Spa XL 7000 and 9000 heater systems made by Balboa. These stick on sensors can be found on the left and right side of the heater tube just before the unions. This foam sensor is used in place of the standard M7 sensors that normally screw into a sensor well and installs very easily thanks to its peel and stick design. Common codes you may get when this sensor fails are SN, SNa and SNb. Always be sure to verify that these sensors are making full contact with the heater tube and not curcling up.
| Sensor Application | Spa Control |
| Sensor Type | Temperature |
| Application | Balboa Water Group / Cal Spa |
| Model | M7 |
| Connector Type | 2 pin |
| Sensor Diameter | Foam |
| Wire Count | 2 wire |
| Wire Length | 12" |
