Rugged Durability: The 304 stainless steel plate protects the sensing element from impact and unauthorized adjustment in high-traffic areas

long-term performance in demanding heating environments

It's designed for seamless integration and robust performance in high-temperature environments

If the switch is open while cool

Resideo Q4100C9040 Hot Surface Ignitor 30067439-890 Rugged Durability: The 304 stainlessThe Resideo Q4100C9040 Hot Surface Igniter is a field proven 120 VAC furnace ignitor designed for professional grade service and repair of gas fired appliances. Constructed from high durability silicon carbide, this component provides reliable ignition for both natural and LP gas systems. The unit features a wide ceramic mounting base with a right rib offset, ensuring stable positioning within the burner assembly to withstand high vibration