This is the Atlas® Quantum Engineer Controller. Suitable for Ages 10 & Older. FEATURES: Allows DC users of Atlas Master Gold Series locomotives to take advantage of all the QSI® Quantum System sound features without special equipment or wiring. It"s designed to operate dual-mode sound locomotives that include the latest QSI Quantum Analog Remote Control (QARC) system. Access the horn and bell sounds, as well as different engine settings and effects such as number lights, flanges, dynamic brakes, coupler sounds, blower/fans, reverse lights and tons more! Access other advanced features such as programming options, locomotive braking, locomotive shut-down and start-up procedures, verbal scale speed readout and more! Set up is nothing!...simply wire in between a standard DC power pack and the track. Detailed instructions included. INCLUDES: (1) Controller COMMENTS: The Quantum Engineer Controllers are designed to operate locomotives that have QARC (Quantum Analog Remote Control) technology. Except for simple horn and bell operations, the Quantum Engineer Control is not suitable for older Quantum-equipped engines that do not have QARC technology included. The Quantum Engineer will only operate sound locomotives that include the latest QSI technology. This technology is included in all Atlas, Life-Like/Proto 2000 and Hobbycraft Canada Quantum sound-equipped locomotives. The more recent locomotive releases from Broadway Limited Imports (BLI) can also be operated. Older BLI locomotives and Lionel HO locomotives can NOT be operated with this controller. kr4/20/06 ir/kh