9mm Electromagnetic Buzzer: 30Ω, 3-7V, Side Opening

Pololu's 9mm Electromagnetic Buzzer: 30Ω, 3-7V, Side Opening is a compact and efficient solution for adding sound to your embedded project. This electromagnetic transducer operates with a PWM signal ranging from 3V to 7V, producing sound at the frequency of the supplied signal through a side opening. The buzzer has a maximum current draw of 70mA, which is higher than what a typical microcontroller I/O pin can supply, making it ideal for control with a suitable driver like a small MOSFET.

Pololu's electromagnetic buzzer is not just compact, it's also incredibly versatile. It can be used in a variety of applications, from alarm systems to robotics. Whether you're creating a DIY home security system or a robot that communicates through sound, this buzzer is an excellent choice. It's also ideal for educational purposes, allowing students to learn about sound frequency and electromagnetic transduction in a hands-on way.

The unique side opening of the buzzer allows for a more directed sound output. This design feature makes the buzzer perfect for projects where a specific direction of sound is needed. Furthermore, the buzzer's ability to produce sound at the frequency of the supplied signal allows for a wide range of tonal possibilities. This makes it a versatile tool for any project that requires sound.

With its compact size of just 9mm and a weight of only a few grams, the Pololu electromagnetic buzzer is easy to incorporate into any project, no matter how small or complex. Its 30Ω impedance ensures efficient operation, while its operating voltage range of 3-7V offers flexibility in terms of power supply. This is a buzzer that delivers on all fronts: size, efficiency, versatility, and ease of use.