Honeywell 621-6450 Description Description Honeywell 12V DC SRD Output Module 2A Related products HONEYWELL STD924-A1A-00000-MB.3H+XXXX HONEYWELL 621-6575 HONEYWELL 621-9934 HONEYWELL 621-9990 HONEYWELL 620-3691C HONEYWELL 621-9937