Honeywell 621-4500 Description Description Honeywell 12-24V DC Source Input Related products HONEYWELL 620-1690C HONEYWELL 621-3550 HONEYWELL DM106-0-A-00-0-R-1-00000-000-E0 HONEYWELL 620-0053 HONEYWELL 620-0090 HONEYWELL 621-9990