Explore unknown areas, measure distances, follow tracks, 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 and trigger an alarm etc. The Robo Explorer sensors can do all of this and much more. Features include NTC resistor, photoresistor, new ultrasonic distance sensor, infrared and color sensor and specially developed track sensor. Two power motors and the crawler drive make it possible to explore and travel almost impassable terrain. Includes 2x power motors, 2 sensors, 3 lights, buzzer, NTC resistor, photoresistor, ultrasonic distance sensor, color sensor and track sensor. Note: Requires Robo TX controller or Robo interface, Robo Pro software and Accu Set rechargeable battery pack with charger – not included.