Atwood 91859 WH switch white
This is a Dometic/Atwood water heater on/off ignition switch. It has an on/off switch and a RESET light. The light will light up while the water heater is attempting to lite, then shut off once the propane ignites. If the water heater does not lite, the RESET light will stay on until you turn the switch off then back on to re-attempt ignition.