Balboa Non-M7 31" 1/4" Hi Limit Temperature Sensor [2-pin] (30921) chlorinegenerators O-rings are widely used because

O-rings are widely used because they offer a compact

or has worn contacts affecting circuit switching

and model compatibility before installation

or no longer gives dependable control over the intended flow path

a 2-cup holder lid

Balboa Non-M7 31" 1/4" Hi Limit Temperature Sensor [2-pin] (30921) chlorinegenerators O-rings are widely used becauseA 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