The Adapter 9 Volt DC 300mA for Viper 787 Electronic Dart Board eliminates the need for costly batteries in your electronic darts setup. The cord plugs right into you board and is long enough to easily integrate into most wall-mounted configurations. Compatible only with the Viper 787 dartboard. About GLD Products GLD Products has been manufacturing and distributing well-known family gaming products for over 30 years and is proud to be America"s leading innovator of darts, billiards, table games, and home casino products. GLD is located in Muskego, Wis. * Converts the Viper 787 to DC power * Replaces the need for batteries * Dartboard sold separately