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Simple drop-in installation with no modifications required
spring and O-rings
EC50A and similar)
SP1095 (above-ground pools)
a fast-acting
Pentair MasterTemp Pool Heater Thermistor | 42001-0053S DE Filter Simple drop-in installation with noPentair Mastertemp & Max E Therm Thermistor 42001 0053s Ensure your pool or spa heater operates efficiently with the Pentair Thermistor 42001 0053s, a crucial replacement part designed for precise temperature regulation. This thermistor and water sensor is compatible with several high performance heaters, including the ETI400, Mastertemp, and Sta Rite Max E Therm models. This replacement thermistor is tailored specifically for the electrical systems
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