Honeywell, Inc. ST7800C1136 ST7800 Plug-in Purge Timer SKU: 015484df8e89 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 Flame Sensor C7027A1023 Read more HONEYWELL M9184C1031 150 lb-in, NSR Actuator, Proportioning control, 2 Aux. Switches, 24V Read more Honeywell RM7800E1010 Programmer