The Robertshaw® Silicon Nitride Hot Surface Ignitors provide a new and resilient solution to gas ignition. The Silicon Nitride Ignitor provides exceptional improvement in durability by virtually eliminating breakage. ? All Robertshaw Silicon Nitride Hot Surface Ignitors are very durable, robust and resistant to rust, dirt, condensation, oils or falling debris from the heating element. ? The Robertshaw Silicon Nitride Ignitors are 120V AC. Some hot surface modules are rated for 208/240 volts input, however they step the voltage to the ignitor down to 120V AC. ? High temperature leads are enclosed with a special fiberglass insulation providing superior electrical protection. ? This ignitor is a functional upgrade or replacement to Silicon Carbide applications. ? Ignitors are boxed with mounting hardware and termination required for direct replacement. Robertshaw - Simply the Right Choice?