Honeywell ST9120U1011 Universal Electronic Fan Timer
Replaces all others. The 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.
Universal compatibility - replaces more than 41 other models
On/Off delay settings are field adjustable
Monitors the thermostat for heat, cool and fan demands, runs the induced draft blower motor, runs the circulating fan (up to 2 speeds), monitors limit switch strings and energizes ignition control