M7 Temperature / Hi-Limit Sensor – 12" Lead, 1/4" Bulb Spa Heater Senso

Ensure accurate temperature monitoring and critical overheat protection with the M7 Temperature / Hi-Limit Sensor – 12" Lead, 1/4" Diameter Bulb. Designed for spa systems using M7 heater technology, this dual-function sensor monitors both water temperature and high-limit safety conditions—helping maintain safe, reliable heater operation.

M7 systems rely on paired sensors mounted directly in the heater tube rather than a traditional pressure switch. If a temperature or hi-limit sensor fails, the spa may display error codes, shut down heating, or operate unsafely. Replacing the sensor with the correct M7-compatible unit restores accurate readings, proper heater cycling, and system protection.

Featuring a 1/4" diameter sensor bulb and 12-inch lead, this sensor is manufactured to OEM specifications for consistent performance in high-heat, high-moisture spa environments. It is compatible with Balboa Water Group control systems that utilize M7 technology.

Specifications:
- Sensor Type: Temperature / Hi-Limit
- System Type: M7
- Lead Length: 12"
- Bulb Diameter: 1/4"

Key Features:
✔️ Dual-function temperature and hi-limit safety sensor
✔️ Designed for M7 heater systems
✔️ 12" lead length for standard heater mounting
✔️ 1/4" bulb diameter for proper heater tube fit
✔️ OEM-spec replacement for reliable spa operation

Restore safe heating and accurate temperature control with the M7 Temperature / Hi-Limit Sensor, an essential replacement component for Balboa-controlled spa systems.