Take remote control out of the past! This affordable four-channel controller is designed in the gamepad style with dual joysticks to feel more natural to students. Plus, it offers high-end perks, including interference-free performance, servo reversing, motor trim adjustment, easy linking, and a R2004GF receiver. Can be used with TETRIX® MAX or TETRIX PRIME systems. Controller is 2.4 GHz; includes four AA batteries. Controller color might vary.