Honeywell 621-9940 Description Description Honeywell Serial I/O Module (8/16/32 Point) Related products HONEYWELL 621-3552RC HONEYWELL 620-1690 HONEYWELL 621-6575 HONEYWELL 51304156-100 HONEYWELL AX51-061-001 HONEYWELL STD924-A1A-00000-MB.3H+XXXX
