3Pcs/Pack 2WD Ultrasonic Smart Robot Car Chassis Tracking Car DIY Kit For

Features 1 Mechanical structure is simple and very easy to install 2 Car comes with 20 wire tachometer yards with photoelectric gun shop can be quickly formed a gun systems 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 Specifications WIth dual TT motor Motor voltage 3 6v Single 9g servos Suitable DIYer Quantity 3Package included 3 x Car Chassis Kit