Profile: Keithco, Inc. provides radio control systems. Our Locolinc® radio control system provides model railroaders with a comprehensive control system capable of controlling locomotives as well as accessories on the layout. It allows direct, wireless transmission and controls D.C. devices, A.C. devices via solenoids or relays, & is compatible with battery packs used in outdoor layouts. It provides addressable, radio frequency operation for independent control of locomotives and accessories within a 150-foot range.