Modern Robotics has a comprehensive range of sensors for competition, experimentation and education. All the sensors are housed in rugged custom housings so there is no exposed circuit boards or wires that can damage the sensor or the host system. See an overview of some of the sensors in the video below.
The Modern Robotics Color Sensor detects the color of an object using reflected light or the color of light from an external light source. Great for detecting and tracking colored lines and determining the color of a lit object.
The Modern Robotics Range Sensor measures distances from 1cm to 255cm. The Range Sensor combines an ultrasonic sensor to detect objects from approximately 5cm to 255 cm and an optical sensor to detect objects closer than 5cm.