this mechanical countdown switch fits seamlessly into a standard 2-1/2 inch deep vertical junction box

Durable Construction: Built to withstand high-cycle environments and extreme temperature fluctuations common in condensing units

Whether you are handling natural gas

allowing technicians to stock a single unit that exceeds the requirements of 370V systems

Enhanced Reliability: Features enclosed snap-action contacts and a dust cover

Lennox 69W43 Flame Sensor this mechanical countdown switch fitsThe Lennox 69W43 Flame Sensor is a critical OEM safety component engineered for precise flame rectification within gas furnace burner assemblies. As a direct 69W4301 replacement part, this sensor features a high grade stainless steel sensing rod capable of withstanding operating temperatures up to 2190F, paired with a durable ceramic insulator rated for 1000F. When the furnace control board initiates the ignition sequence, the 69W43 detects the