R8330D1039 Honeywell 24V Electric Furnace Sequencer. Genuine Honeywell quality part. Isolated fan switch with positive interlock assures fan is energized when the element is energized, and fan is off when the element is off. Combination rating on the first element switch allows replacing devices having fan and first element controlled by the same switch without rewiring the furnace. Auxiliary switch controls a second R8330 in application with more than three elements. Cycles ON within two minutes, OFF within four minutes. Ten-second minimum delay between stages (makes sequence and break sequence.) Timings meet EEI-NEMA and ARI 280 Standards.
ST9120U1011 Honeywell Adjustable Electronic Fan Timer. Includes wire harnesses and instructions. New Universal platform that will not only integrate control of all combustion blower and circulating fan operations in a gas warm air appliance but also replace all other existing Honeywell fan timer boards. It now has a replaceable fuse and DIP switch with selectable heat and cool delay for added flexibility. This new fan timer will also save you time and money with its diagnostic LED and continuous EAC and HUM terminal connections. These new options and features make it the best fan timer for your needs.