Features: 1) Supports RS485 and TCP/IP communication simultaneously 2) Can be connected to different brands card readers, such as EM/TI, 3) The number of cards and the times of recording can be expanded to 160,000 piecesand 218,000 strokes 4) Patent multi-communication transmission module, which can expands the region ofthe controlling door of 2/4/8/16/32 till 128 doors 5) 12 keystrokes as mobile phones; red backlight 6) LCD high resolution 128 x 80 ratio pixel mobile phones; blue/red backlights 7) Mass adoption of components of mobile phones, with the size of ordinary mobilephones producing area:China payment:T/T, L/C