HARY 20PCS Piezo Buzzers for Quizzes 12085 leads, 3-12V 85dB Electronic Buzzer Alarm with 30mm Cables for Circuit Projects, School Competitions & DIY Kits

• Loud & Clear 85dB Sound : These piezo buzzers deliver sharp, 85dB alerts perfect for classroom competitions, game shows, and team quizzes. The consistent tone ensures fair play, with sound that cuts through room noise.
• Flexible Power Options : Works with AA/AAA batteries (3V), 9V blocks, or 12V adapters, making these quiz buzzers versatile for:✓ School science fairs✓ DIY quiz boards✓ Educational STEM kits
• Durable ABS Housing : The compact ABS plastic casing resists drops and wear, surviving repeated classroom use. Each buzzer measures just Φ11mm × 9mm—stackable and portable.
• Pre-Wired with Cables : Each buzzer comes pre-attached with 30mm wires, ready to plug into breadboards or clip to batteries. No soldering needed—ideal for quick quiz game setups or student electronics projects.
• 20-Piece Set : Includes 20 identical buzzers (enough for 5 teams of 4), ensuring fair competition formats. Great for:✔ Trivia nights✔ School quiz bowls✔ DIY reaction-time games

HARY 20PCS Quiz Buzzers - 3-12V Piezo Buzzer Set for Classroom Games Key Features: 85dB Loud Sound - Clear tone for competitions 3-12V Compatible - Works with batteries/adapters 30mm Pre-Wired - No soldering needed Classroom Ready - Perfect for quiz games 20-Piece Set - For teams or multiple projects Specs: Voltage: 3-12V DC Sound: 85dB @ 2.8KHz Size: Φ11mm×9mm Cable: 50mm wires Includes: 20x buzzers (ready to use) Make learning fun with interactive quizzes! Ideal For: School competitions DIY electronics Science fair projects