The Vulcan Hart 00-913102-00163 Oven Signal Light Kit is a compact on-and-heat indicator designed to fit a 1-1/4" x 13/16" mounting hole on compatible equipment panels. It works by illuminating when the oven is powered on and actively heating, allowing operators to quickly confirm operating conditions without opening the unit. This helps improve workflow efficiency and reduces unneces... https://partsfe.com/signal-light-kitlight-on-and-heat-for-vulcan-part-00-913102-00163