Honeywell 621-6501 Description Description Honeywell 12-24 V DC Source Self Protector Related products HONEYWELL 620-1690 HONEYWELL 621-9990 HONEYWELL 620-0090 HONEYWELL 620-0053 HONEYWELL 621-6575 HONEYWELL DM106-0-A-00-0-R-1-00000-000-E0