2-Pack — Active Buzzer Alarm Module for Arduino, ESP32, STM32 — 3.3V/5V

Two active buzzer alarm modules. Produce a loud, fixed-frequency tone when triggered — perfect for alerts, alarms, and audio feedback in your projects. Just apply voltage to the signal pin and it buzzes.

Note: This is an active buzzer (alarm tone only). It is not a speaker and cannot produce arbitrary sounds or music.

Key Specifications

• Type: Active buzzer (built-in oscillator)
• Operating voltage: 3.3V–5V DC
• Output: Fixed-frequency alarm tone
• Pins: VCC, GND, Signal (I/O)
• Compatible with Arduino, ESP32, ESP8266, STM32, AVR, Raspberry Pi

What's Included

• 2x Active Buzzer Alarm Modules

Common Applications

• Audible alerts and alarms
• Button press feedback
• Timer and countdown buzzers
• Proximity warning systems
• Security and intrusion alert projects

---

Multi-item discount: 10% off 3 items, 15% off 5+ items. Applies to most of our store.

FREE Shipping to USA and APO addresses. Ships same or next business day from Georgia.