Trivia Game Buzzer iPhone App
microcontroller - Button buzzer game circuit(s), how to use a 5V logic circuit to control a 24V LED circuit - Electrical Engineering Stack Exchange
Professional Buzzers for Game Shows and Quizzes • Affordable Buzzers
Hardware Hump Day: DIY Game Buzzer for National Trivia Day - News - SparkFun Electronics
StarBuzzer Buzzer for groups by Maximilian Bardon
Game Circuits
Hardware Hump Day: DIY Game Buzzer for National Trivia Day - News - SparkFun Electronics
The Best 5 Buzzers That Show Who Buzzed First - Trivia Bliss
Buzz Wire
AFFORDABLE - Wireless Trivia Game Buzzer System