2 Wheels Ultrasonic Smart Robot Car Chassis Tracking Car Kit For

Features 1 Mechanical structure is simple and very easy to install 2 Car comes with 20 wire tachometer yards You can speed distance composed ofclosed loop systems 3 Car with four on the 5th battery compartment convenient to the entire system power supply At the same time equipped with a switch easystart stop system Without additional very convenient so that the whole system is highly integrated4 Car shop with L298N driver module four tracking module as well as 51 control unit seamless simple and good looking components of the system Package included 1 x Car Chassis Kit