Active Buzzer DC 3-5V 85dB Sounder Module for Arduino & Raspberry Pi
Active Buzzer
This active buzzer generates a continuous tone when DC voltage is applied—no external oscillator needed. Just power it with 3–5 V to get an 85 dB alert at 2.3 kHz, perfect for alarms, timers, and status indicators in embedded projects.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 3–5 V DC |
| Current Consumption | ≤30 mA |
| Sound Output | 85 dB at 10 cm |
| Resonant Frequency | 2.3 ± 0.3 kHz |
| Dimensions | 12 mm x 9.5 mm (⌀ x H) |
| Pin Spacing | 6.5 mm (2-pin header) |
What You Can Build With This
- Countdown timer with audible beep
- Door-open alarm for home security
- Temperature threshold alert (combine with LM35)
- Simon Says memory game with sound feedback
Compatibility
Works directly with Arduino Uno, Nano, Mega, and Raspberry Pi GPIO (via transistor for higher current). Accepts 3.3 V logic level for control—simply connect the positive pin to the MCU pin through a current-limiting resistor (100 Ω). Common pairings include Arduino tone-generating projects or as a simple alert alongside LCDs and sensors.
Wiring Notes
Red wire to VCC (3–5 V), black to GND. Drive the buzzer directly from an Arduino digital pin (set HIGH to sound) with a 100 Ω resistor in series. Max current draw is 30 mA; do not exceed 5 V or continuous operation beyond 30 seconds may affect longevity.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the active buzzer works with any Arduino board. Connect the positive lead to a digital pin (with a series 100 Ω resistor) and the negative to GND. Drive the pin HIGH to sound the buzzer; no tone() library needed.
Can I control the volume?
Volume is fixed. To reduce loudness, you can add a series resistor (100–220 Ω) or use PWM, though the tone may distort. For adjustable volume, consider a passive buzzer with a potentiometer.
Will this work with 3.3 V logic?
Yes, the buzzer activates reliably from 3 V, so it works with 3.3 V boards like Raspberry Pi Pico, ESP8266, or STM32. For Raspberry Pi GPIO, use a transistor driver because the pin current is limited.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items