Honeywell 621-3502 Description Description Honeywell 12-24V DC Fast Response Input Related products HONEYWELL AX51-061-001 HONEYWELL 620-0090 HONEYWELL 621-6575 HONEYWELL DC3002-0-20A-2-89-0111-EN HONEYWELL C7027A1031 HONEYWELL 621-2200