Caldera Hi-Limit sensor used on the Advent control systems from 2002 - current. This sensor is found mounted to your heater and detects high heat conditions to protect the heater from running dry or flow restrictions.
Found in Caldera, Utopia, Paradise and Solana series spas
| Sensor Application | Spa Control |
| Sensor Type | Hi-Limit |
| Application | Watkins / Caldera |
| Model | IQ / Advent |
| Connector Type | 2 pin |
| Sensor Diameter | 1/4" |
| Wire Count | 2 wire |
