veihcle speed limiter

Opposite to tranditional speed limiter device, programmable speed controller GV90S is small in size and multiple in function with gps gprs gsm tracking, in sum up, it is a small and strong multi-functional device . Moreover, we can print 1 hour speed data from the device. The speed record is include many datas such as data and time, highest speed, nomral speed and violation, etc.