Honeywell 621-1101 Description Description Honeywell 115V AC / DC Isolated Input 6 Point Related products HONEYWELL AX51-051-001 HONEYWELL 621-9934 HONEYWELL 621-6575 HONEYWELL AX51-061-001 HONEYWELL DC3002-0-20A-2-89-0111-EN HONEYWELL 621-3550