The TV Scoreboard (sometimes called RadioShack TV Scoreboard) is a Pong-like dedicated home video game console manufactured in Hong Kong from 1976 through the early '80s and made by Tandy. Distribution was handled exclusively by RadioShack.
The TV Scoreboard consisted of a left and right player, with dials or paddles on the hand held piece, and had multiple Pong era games. A variant also included a revolver-type light gun, which was used for a clay pigeon shooting game. Using additional cosmetic attachments to the light gun, the user could change its appearance to be that of a rifle. The games included but were not restricted to tennis, squash, hockey and practice. Games and game modes, including difficulty settings and serving settings, could be adjusted with switches. It ran on either an AC adapter, or six 1.5 V AA batteries.
Source: Wikipedia, "[en.wikipedia.org/wiki/TV_Scoreboard TV Scoreboard]", available under the CC-BY-SA License.