42002-0025S 140F Automatic Gas Shutoff Switch KSD Bimetal Thermostat for Mastertemp Max-E-Therm Pool Spa Heaters 200 300 400 125

- Replacement:Replacement part number 42002-0025S (140F)
- Compatible Model:The automatic gas shutoff switc fits for Pentair Mastertemp all models, fits for Sta Rite Max-E-Therm Sr200 Sr333 Sr400 Pool - - Heaters models, fits for Sta Rite heater and all HD Versions as well, please check carefully to ensure seamless connection
- Safe Reliable: This automatic gas cut-off switch is used to detect and monitor if the heat exchanger outlet temperature exceeds the safe level of 140°F, the switch will open immediately when this occurs, ensuring the heater is operating within a safe temperature range
- Easy and Reliable Installtion: To install the switch, you need to turn off all power, disconnect the two wires from the old sensor, and plug in the new switch for a hassle-free installation without the need for a professional