Made of durable, non-porous silicon nitride, Robertshaw Mini Ignitors provide reliable ignition in a small footprint. They offer contractors easy handling, simple installation and dependable operation. Dependable ignition in a small footprint. Constructed with unique non-porous, high-strength material. 3 second heat-up time. Easy to handle and install. Trouble-free operation. 18 AWG wire gauge. Operate at 120V AC.