2 , overspeed alarm: sending text messages via cell phone to the device, enable overspeed alarm features.

3 , electronic fences: sending text messages via cell phone to the device, start the electric fence function.

4 , remote-control circuit and circuit

5 , set the positioning interval: set interval for data transfer via mobile phone.

6 , mileage, power failure alarm function of statistics.

7 , compatible with the original car alarm : car alarm alarm system alarm, notifying owners by text message.

8. 尺寸：尺寸（长×宽×厚 mm ） 86 × 60 × 25( 不含天线 )