DIY 4WD Double-Deck Smart Robot Car Chassis Kits with Speed Encoder

Specification: Model: ST-4WD Voltage: 6V Size of Car: 280*180*73mm Material: Acrylic Length of board :280mm Width of board : 150mm Weight: 672g Feature: 1.Mechanical structure is simple,so it is easy to assemble. 2.This car have 4pcs deceleration DC motor,it can corner well. 3.The car comes with speed encoder, cooperate with our speed of photoelectric, can rapidly form a speed measuring system. Can speed, range, form a closed loop system. 4.Can use with other devices to realize function of tracing, obstacle avoidance, distance testing, speed testing, wireless remote control. 5.20 line Speed Encoder, more accurate than 6 or 10 one. Packaging Included: 2X Car Chassis 4X Deceleration DC Motor 4X Wheels 4X 20 line Speed Encoder 8X Fastener 1X Screw Pack