Meet the Roominate rPower Controller: a controller that brings your creations to life, allowing you to control them using your phone or tablet. For those of you not familiar, Roominate is a modular, educational toy for girls. rPower is compatible with all Roominate kits. It lets you change how fast or slow cars move, turn lights on / off, and more.
The rPower set comes with 2 cable adapters. You will need 2 AAA batteries. Costs under $30.