SCR100 is the world's first TCP/IP-based access control controller and reader launched by China Control Technology. The professional access control machine without screen and button of radio frequency card is added to the series of access control products of radio frequency card category, which can provide more product options for the system access control scheme. This product can be used as a single computer control lock or as an access control controller. The standard TCP/IP protocol can realize cross-section and cross-gateway connection networking. It can build Web server to access query records through the network. It also has German professional and leading industrial design concepts, new polycarbonate materials and new arc shell design concepts. Combine European style of use.