General description 15 pieces of DC 3V, 5V, 9V, and 12V electronic buzzers designed for alarm systems and physical circuits. These buzzers produce a loud sound with a sound pressure level of 100 dB, making them suitable for various applications. Technical specifications Sound Pressure Level: 100 dB Frequency: 400 Hz Rated Voltage: DC 12V Overall Size: 34 x 17 x 15 mm (1.3" x 0.7" x 0.6") Mounting Hole Diameter: 3 mm (0.12") Cable Length: 9 cm (0.38") Actuator: Mechanical Material: ABS Color: Black Operating Temperature: -20~+60°C Other information Package Content: 15 x Electronic Buzzers