Honeywell 621-4350 Description Description Honeywell 5V DC TTL Input Related products HONEYWELL DM106-0-A-00-0-R-1-00000-000-E0 HONEYWELL 621-9934 HONEYWELL 621-0010 HONEYWELL 51304156-100 HONEYWELL 621-9937 HONEYWELL 621-3552RC