You are purchasing 2 Safety light curtain controllers,or interface boxes. One is new never used, was removed from parts shelf, the other was operatiojnal and removed due to equipment decommissioning. Have 2 weeks to install and test. AS i have noted ONE unit is new never used. The used unit I will also gaurantee, warranty only if not modified during installation. No returns for wrong equipment ordered so please ask questions! If you need more pictres just ask! Buyer to pay 35 for US Priority mail shipping anywhere in USA. Overseas okay through shipping. I am a disabled Veteran business and ap[preciate your patronage...IT HELPS! Here is what you will recieve. 1). USED YELLOW USED AB 440 CONTROLLER SAFETY INTERFACE: Has AB Microprocessor FLEX I/O 24 VDC power supply 1794-PS3, AB MSR127TP/ 440r-N23132 and all components shown in box including key lock. 2). NEW AB 440 CONTROLLER SAFETY INTERFACE: HAS AB1606-XLP72E power supply/ 440r-N23132 and all components shown in box including key lock. As I noted, two weeks warranty from time of receipt, Must contact me prior to 14 days from receipt no exceptions, no returns for wrong parts ordered. This is a great deal! Check out my other equipment auctions, I deliver what I promise and will anser all questions to best I can! This is a great deal for any Facility in manufactureing even if for SHELF spares