Honeywell, Inc. ST7800C1128 ST7800 Plug-in Purge Timer SKU: 1ab52ac88631 Category: Honeywell Description Description Provides the prepurge timing for select 7800 SERIES relay modules. Related products Read more Honeywell Burner Control RM7800G1018 Read more HONEYWELL M9185A1018 60 lb-in, Spring Return Actuator, Proportioning control, 24V Read more Honeywell RM7800E1010 Programmer Read more Honeywell R7847A1033 Flame Amplifier