Abstract: The preferred scoreboard of this invention includes an electronic controller, an antenna, a power source, and commercially available electromechanical display devices, inside a weatherproof case, and two alternative remote control units, one a full function remote control, and the other a partial function, or “umpire,” remote control. The electronic controller includes a microprocessor, an RF receiver section, a power control section, and a display control section. It may also include, and preferably does include, an address selection section and a battery voltage measurement section. The RF receiver section receives pulsed or coded radio frequency signals from the remote controls, and converts them to binary DC signals for the microprocessor. The microprocessor decodes the input and controls the display control section. The display control section controls the switching of power to individual electromagnets in the electromechanical display devices.