2pcs Passive Buzzer

🔹 2pcs Passive Buzzer Module – Arduino Compatible, 3-5V Square Wave Drive

This pack contains two passive buzzer modules designed for generating custom tones and melodies with microcontrollers. Unlike active buzzers, a passive buzzer requires an external square wave signal to produce sound, giving you full control over frequency and pitch for projects like alarms, musical toys, and sound effects .

✅ Specifications:

Operating Voltage: 3.0V – 5.5V (compatible with 3.3V/5V logic)

Resonant Frequency: 2700 Hz – 4.5 kHz (varies by model)

Sound Output: >80 dB at 10cm

Mounting: Through-hole 2-pin (PCB/solder points)

Operating Temperature: -20°C to 70°C

Dimensions: ~20mm x 20mm x 10mm (module) / 12mm diameter (standalone)

Package: 2 pieces (module or bare buzzer, depending on variant)

📦 Features:
✔️ Tunable tones – generate any frequency (1kHz–5kHz) for melodies and alerts
✔️ No internal oscillator – requires PWM or tone() function from microcontroller
✔️ Low power draw – operates efficiently on 3–5V systems
✔️ Arduino/Raspberry Pi compatible – works with standard GPIO pins
✔️ Through-hole design – easy to mount on breadboards or PCBs
✔️ Module variant option – some include transistor driver for stronger output

📦 Applications:
✔️ Playing melodies and musical notes with Arduino tone() library
✔️ Alarm systems, timers, and notification sounds
✔️ Interactive sound effects for games and toys
✔️ Piezo buzzer for tone feedback in control panels
✔️ Educational projects exploring frequency and sound generation