description:<br />-100%  and high quality<br />-intelligent car chassis tracing car robot car chassis with code disk<br />-ideal for diy<br />-mechanical structure is simple， it is easy to install.<br />-this car is the tachometer encoder<br />-with a 4 aa battery box and power switch. (batteries not included)<br />-can be used for distance measurement， velocity.<br />-can use with other devices to realize function of tracing， obstacle avoidance， distance testing， speed testing， wireless remote control.<br />-quantity:1 set<br />-kindly note: the car chassis is transparent， you need to tear out protective paper<br />-note: motor power supply is 3v~6v. all the parameter above is tested without load.<br /><br />due to the difference between different monitors， the picture may not reflect  the actual color of the item. thank you!<br /><br />package included:<br />1 x car chassis<br />2 x gear motor<br />2 x car tire<br />2 x speed encoder<br />4 x t-shape small bracket<br />1 x universal wheel<br />1 x battery box (batteries not included )<br />1 x switch<br />1 x installation instruction<br />all necessary screw and nut<br />