This harness is a direct OEM replacement

If the venting system becomes obstructed or the inducer motor fails to maintain the required pressure differential

Voltage Versatility: Capable of switching 110/120 VAC or 240 VAC loads with superior arc suppression

it is backward compatible with the standard 909 series relief valves of the same 3/4" and 1" sizes

Lennox 10M79 Limit Switch 323055-751 This harness is a directThe Lennox 10M79 Limit Switch is a critical safety component engineered for precision thermal monitoring in HVAC systems and residential furnaces. This OEM Lennox part, also identified by manufacturer number 10M7901, features an L140 40F configuration. It is calibrated to open the electrical circuit when internal temperatures reach a 140F limit, effectively preventing heat exchanger damage and ensuring safe appliance operation. The switch