... memory function can store 200 transport line.2 Low power , Long use time, High Reliability.3 choose antijam integrated circuit .4 ... support Computer operation , SD card ,gprs data mode11 the tail board can show : brake or swerve Key specification: LED’s specification: ... guideboard 4 case (picture of Xinhui bus) 5 high-accuracy circuit board board Item No.Border size(cm) word number BG-LPLED03 236 ...