Altimetry speed pile / Pile

Compared to the traditional limit high pole, this product utilizes the principle of infrared sensors. When the vehicle after the installation of the ground feeling coil activates the infrared pile, infrared loop pile height measured infrared high and low at the speed. When the vehicle passes through infrared sensor when the vehicle automatically determine whether high, and on the basis of just the sense coil and infrared trigger time computation time feedback to the lights and warning lights, and sends the message to the police.