3V Passive Buzzer

The 3V Passive Buzzer is a small sound component rated for 3 V that has no built-in oscillator, so it makes sound only when you feed it a changing signal. This lets you choose the pitch: with the Arduino tone() function you can play beeps, alarm sounds and simple melodies, which a fixed-tone active buzzer cannot do.

3V Passive Buzzer Specifications

• Type: passive buzzer (no internal oscillator)
• Rated voltage: 3 V
• Drive signal: square wave or PWM; the frequency sets the tone
• Terminals: 2

3V Passive Buzzer Applications

• Playing melodies and sound effects with Arduino
• Alarm, timer and doorbell sounds
• Button press and menu feedback beeps
• Electronics lessons on frequency and sound

What's in the Box

• 1 × 3 V passive buzzer

Tip: With a steady DC voltage a passive buzzer only clicks, so use tone(pin, frequency) to make it sound. Because it is rated for 3 V it suits 3.3 V boards such as the ESP32; from a 5 V Arduino pin, add a small series resistor of about 100 Ω or drive it through a transistor.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.