shielded cable should be utilized to maintain signal integrity

Robust SPST Logic: Simplified single pole single throw operation provides a reliable "normally open" or "normally closed" circuit path for the ignition controller

or clamp mounting through an outlet box knockout

Synthetic Pleated Media: Increased surface area for superior dust-holding capacity compared to standard glass fiber filters

Lennox 93W72 Limit Switch 321142-301 shielded cable should be utilizedThe Lennox 93W72 Limit Switch (also identified as L155 30F) is a critical safety component designed for precise thermal regulation in residential and commercial heating systems. This genuine OEM Lennox replacement part is engineered to monitor internal furnace temperatures and disrupt the electrical circuit if the heat exceeds the safety threshold of 155F. Featuring an auto reset function, the switch restores the circuit once temperatures drop by 30F