Lennox 40L81 Flame Sensor Kit Els PW 17895 Is the keyway and setscrew

Is the keyway and setscrew included

This rating indicates the specific negative pressure required to close the circuit

Is the 669941R compatible with all Nordyne cabinets

this 50VA multi-tap transformer effectively steps down high-voltage industrial power to 24 VAC for local control circuits

Lennox 40L81 Flame Sensor Kit Els PW 17895 Is the keyway and setscrewThe Lennox 40L81 Flame Sensor Kit is the critical genuine OEM replacement for maintaining combustion safety in Lennox HVAC systems. Engineered as a direct 1: 1 substitute for 40L8101 and LB 94701A, this kit is vital for the SureLight ignition system found in G23, G26, G32, and 90UGF series furnaces. As a veteran grade HVAC flame rod, it utilizes flame rectification to signal the control board, ensuring the gas valve remains bridged only when a stable