2WD mobile robot kit 10004 This robot kit provides an economical introduction fo the world of robotics. it has 2 drive wheels and a freewheel. It includes a serials of sensors making it aware of the surrounding: Sonar sensors fo detect the obstructions, IR distance measure sensors suds as a fall-arrest detector, bumper sensors fo make it turn around while run into obstruction In its way. It is based on Arduino micro controller. Its aluminum alloy body is firm sough to bs mounted with extension equipment.