Honeywell 621-1201 Description Description Honeywell 230V AC / DC Isolated Input 6 Point Related products HONEYWELL 621-3552RC HONEYWELL AX51-051-001 HONEYWELL 621-9990 HONEYWELL 621-0009 HONEYWELL 620-3590 HONEYWELL STD924-A1A-00000-MB.3H+XXXX