Take control of your LEGO models. With the LEGO Power Functions infrared receiver, the battery box, the motors (sold separately) and the remote control, LEGO creations are created that leave nothing to be desired. With 4 remote control channels, 2 stop buttons and 2 direction buttons. The speed of the motor can be controlled via the knobs. 3 AAA batteries (1.5 V) required; not included.