Honeywell Electronic Fan Timer W/ Adjustable Heat Fan On Off Fixed 0 Sec Cool Fan On Off ST9103A1002

Electronic fan timer w/ adjustable heat fan on off fixed 0 sec cool fan on off made of carbon steel for long lasting durability. control provides central wiring point for most electrical components in furnace. monitors thermostat for heat, cool and fan demand for oil. runs oil burner primary control and up to two-speed circulating fans, as required. monitors limit switch string, which energizes circulating fan whenever limit switch opens. hertz is60 . gas valve is-40-150f .