HONEYWELL 621-3580R Description Description HONEYWELL PC BOARD INPUT MODULE 24VDC 18-28VDC 6-15MA Related products HONEYWELL 621-9990 HONEYWELL 620-1690C HONEYWELL C7027A1031 HONEYWELL AX51-051-001 HONEYWELL 620-0090 HONEYWELL 621-6550