Balboa Non-M7 31" 1/4" Hi Limit Temperature Sensor [2-pin] (30921) chlorinegenerators a 2-cup holder lid

a 2-cup holder lid

The black finish and scalloped styling give this control a strong visual presence that works well with darker spa interiors

or has worn contacts affecting circuit switching

For compatible pre-2001 Clearwater valve repairs

Helps maintain reliable signal transmission between components

Balboa Non-M7 31" 1/4" Hi Limit Temperature Sensor [2-pin] (30921) chlorinegenerators a 2-cup holder lidA hi limit temperature sensor is a small but essential part of keeping the heating side of the spa operating safely and predictably, and this Balboa Non M7 sensor is designed for compatible 31 inch 1 4 inch 2 pin applications where the original sensor has become unreliable. When the sensor starts to drift or fail, the spa can stop feeling dependable even if the heater itself is still technically functional. The Non M7 designation matters because