Fangrui Product Details Fangrui Product Details Universal Fit For Heaters: This Kit Includes The 42002-0024s Stack Flue Sensor, 42001-0063s High Limit Switch, And 42001-0053s Heater Thermistor, Ensuring Compatibility With For Sta-, For Mastertemp, And For Max-e- Pool And Spa Heaters. Premium Construction: Crafted From , Rust-free Metal, Our Sensors And Thermistors Offer Reliable Performance. The 42002-0024s Sensor Monitors Flue Gas Temperatures Up To 500f, While The 42001-0053s Operates Effectively From -20c To 80c. Easy Diy Installation: Save On Costly Professional Fees With Our User-friendly Parts. Complete Set: Each Package Contains 1 Piece Each Of 42001-0063s, 42001-0053s, And 42002-0024s, Providing A Full Set Of Replacements To Enhance The Safety And Efficiency Of Your Heating System. Colour:photo Color Material:metal Package Contents: 1 X Pool Heater Repair Kit Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item