The M5 modules allow the user to maintain their existing infrastructure, as well as allowing them to expand their site requirements using Open Technology Mercury based BluCHIP hardware. The M5-IC is an intelligent control device for the replacement of the Casi PX, PXN and PXNplus CPU controller. The M5-2K is a multi-device interface panel for the replacement of the Casi M2000 reader controller. The M5-2RP is a multi-device interface panel for the replacement of the Casi 2RP reader control device. Other modules include the M5-8RP, M5-16DO, M5-16DOR, M5-20IN, M5-Mux8, M52SRP, M5- 8RP and M5-COM. Most important, the Database conversion is available from BluBØX to support a smooth and timely system retrofit.