Robertshaw 41-418 Hot Surface Ignitor As a versatile SPDT relay

As a versatile SPDT relay

while a shift toward yellow warns of moisture contamination

Standardized 24V Control: Integrates seamlessly with existing 24VAC thermostats and control boards

If you are servicing a Series SC or other variants

Robertshaw 41-418 Hot Surface Ignitor As a versatile SPDT relayReliable gas ignition in high demand heating systems requires a component that can withstand extreme thermal cycling. The Robertshaw 41 418 Hot Surface Ignitor is a heavy duty silicon carbide furnace igniter engineered for professional grade performance in residential and commercial HVAC units. This unit features high purity recrystallized silicon carbide (Crystar) construction, which provides superior physical and thermal strength compared to