12085 Passive Buzzer Module – 5V DC

The 12085 Passive Buzzer is a compact and reliable sound component designed for Arduino, Raspberry Pi, and other microcontroller projects. Unlike an active buzzer, this passive buzzer requires an external driving signal (PWM) to produce tones, allowing you to create various sound effects, melodies, or alerts.

Features:

Type: Passive buzzer (requires external oscillation signal)

Rated Voltage: 3-5V DC

Sound Pressure Level: ~85dB @ 10cm

Frequency Range: 2–5 kHz (typical resonance at 2.7 kHz)

Diameter: 12mm

Height: 8.5mm

Mounting: Through-hole

Polarity: Marked (+) terminal for correct connection

Applications:
Ideal for Arduino projects, alarms, timers, electronic toys, and DIY electronics that need customizable sound output.