Honeywell 621-0008 Description Description Honeywell Pulse Input 4 Channel Related products HONEYWELL DM106-0-A-00-0-R-1-00000-000-E0 HONEYWELL 621-3552RC HONEYWELL 620-3590 HONEYWELL 621-6550 HONEYWELL C7027A1031 HONEYWELL 620-0090