Lennox 69W42 Limit Switch 321142-301 Industrial Standard Output: The 4-20

Industrial Standard Output: The 4-20 mA signal minimizes electrical noise interference over long wire runs between the sensor and the controller

Does the kit include water testing supplies

Smith 100112695 Diptube is a critical OEM water heater replacement part designed for high-efficiency thermal performance

Smith 100146605 Gasket Kit is a critical OEM boiler replacement part engineered for high-performance sealing in commercial heating systems

Lennox 69W42 Limit Switch 321142-301 Industrial Standard Output: The 4-20The Lennox 69W42 Limit Switch, also identified as the L220 30 Limit Switch, is a critical OEM safety component engineered for precise thermal regulation within Lennox, Armstrong, and Ducane furnaces. This furnace high limit switch features a 220F opening threshold to interrupt the electrical circuit immediately upon detecting an over temperature condition, effectively preventing heat exchanger damage and ensuring operational safety. With an automatic