Ultimate control over your Power Functions creations! Build a Power Functions IR receiver, battery box and motors into your LEGO creations, then use this handy remote control to start, stop, change direction and more! Control up to 8 different Power Functions with one remote by connecting 2 Power Functions to 4 different receivers each. The reaching distance of the infra-red RC system is at least 30' (10m). Requires IR Receiver (Item #8884), not included. Requires 3 AAA (1.5V) batteries, not included.