Explore unknown areas, measure distances, follow trails, show driving directions by means of blinking signals, recognize colors, measure temperatures, avoid obstacles without touching them, recognize day and night, turn headlights on and off automatically, trigger an alarm, and more. The ROBO TX Explorer sensors can do all of this and lots more: The NTC resistor, the photoresistor, the ultra-sonic distance sensor, the infrared color sensor and the specially developed trail sensor. Thanks to two encoder motors, the tracks can be controlled precisely and steered synchronically. With the rescue robot, which is contained as a model, the construction set provides the ideal basis for participation in the RoboCup. REQUIRES: ROBO TX Controller (#500995), ROBO Pro Software (#93296) and Accu Set (#57487)--all sold separately.Product Measures: VariousRecommended Ages: 10 years & Up