24 Temp/Hi Limit Sensor Dual Purpose Sensor Temp for Balboa Spa Heater M7 System 30344 30042 30382 1/4 Sensor Diameter 2Pc 24" Temp/Hi Limit Sensor Dual Purpose Sensor Temp Fit for Balboa Spa Heater M7 System 30344 30042 30382 1/4" Sensor Diameter (2 Pack) FunctionTemp/Hi Limit Sensor serves as a safety device, monitoring and regulating the temperature of our spas. Once overheating spa issues occur, it shuts off the heater. Therefore, if you are experiencing any spa temperature issue, don't wait to get this Temp/Hi Limit Sensor to resolve it. Very sure this sensor will effectively prevent water from becoming too hot and better improve your spa experience. FitmentWill fit for Balboa Spa Heater M7 System 30344 30042 30382. Also will replaces 304988, 32016, 34-0202-K, 34-0202A-K, 52016, 53605, 9711-101, 9711-109, 9713-101, BAL32016, BB32016, BX9983, RME-30344A SignsWhen you have spa trouble codes as follows: Sn, SnA, Sn1, Sn2. Sn3, HL, EO, E2, E3, Prh, Prr, very likely there is something wrong with your sensor. Check it Smart M7Highlights its function of reliably monitoring spa water and core temp, which not only protects your spa from being too hot but also eliminates frequent cycle of your pump motor. All in all, it will earn your lower operating cost and longer pump life. SpecificationSensor Diameter: 1/4"; Connector Type: 2 pin Easy Installation1) Slide the sensor probe to the sensor housing mount and then tighten the plastic nut; 2)plug the 2-pin connector into PCB. Friendly Service A f-u-l-l refund is available within 30 days if you are not satisfied; we also offer a 12-month warranty from the date of purchase to make sure that you have good experience.