Tested and working, like new, original manufacturer's tags. Programmable controller model D500A CPU 50A Series A1 by Cutler-Hammer Eaton with a Cutler-Hammer D500-RAC8 expansion l/O rack. Specifications: Power input 50VA: 120 or 240 Vac, DC Power output 4.5A / 5Vdc, serial 5500128. All connectors are protected with a rubber cover. The D500 family of PLCs consists of several l/O cards and the racks used to mount them. The D500 is a full function programmable logic controller offering all of the capabilities of larger frame PLCs in a compact design. Surplus industrial electronics from a plant in Montreal (Quebec, Canada). Unit measures 19 X 7 X 5 1/2 inches and weighs 7 pounds.