HONEYWELL 621-3580R Description Description HONEYWELL PC BOARD INPUT MODULE 24VDC 18-28VDC 6-15MA Related products HONEYWELL 621-9990 HONEYWELL 621-0009 HONEYWELL 620-0041 HONEYWELL AX51-051-001 HONEYWELL STD924-A1A-00000-MB.3H+XXXX HONEYWELL 621-2200