The Flashlight Action Cubelet by Modular Robotics is an individual magnetic block that features a built-in bright white LED.On its own it is simply a smart magnetic block but when combined with additional robotic Cubelets it will add the ability for the robot to now emit a directional beam of light.The light will begin to emit brighter as input values increase and will dim as values decrease.This Cubelet is an accessory for use in expanding your Modular Robotics Starter and Standard kits.The Flashlight Cubelet is part of the Action family of Cubelets which are robotic blocks that act as outputs to do things such as light up or move.