Buzzer (5V DC Piezo Electric Buzzer)

Active/Passive Piezo DC Buzzer Module is a compact, high-audibility audio signaling device widely used for sound indication, warning alarms, keypress feedback, and state notifications in electronic systems. Operating across a standard 3.3V to 5V DC range, this lightweight buzzer produces a crisp, clear audible tone with minimal electrical current draw. Designed with standard 2.54mm breadboard-friendly pins, it integrates seamlessly into breadboards, PCB layouts, and microcontroller platforms such as Arduino, ESP32, and Raspberry Pi.

Features

• Crisp, high-decibel audio alert for effective status indication and user feedback
• Ultra-low power consumption suitable for battery-operated handheld devices and wireless IoT nodes
• Wide operating voltage range (3V to 5.5V DC), directly compatible with 3.3V and 5V digital logic
• Standard 2.54mm (0.1 inch) pin pitch for instant breadboard mounting and jumper wire connection
• Compact, sealed plastic black housing providing dust resistance and acoustic resonance
• Simple single-pin GPIO control logic for immediate sound generation
• Lightweight design ideal for compact enclosures, drone warning systems, and handheld meters
• Long operational life with solid-state piezo element and no mechanical wear components

Applications

• Alarm systems, intruder alerts, fire alarms, and security access door chimes
• Keyboard/button press audio feedback for user interfaces and digital meters
• Low battery warnings, error indicators, and countdown timers in embedded electronics
• Drone / Quadcopter lost-model finders and status indicator beepers
• Polytechnic diploma, university engineering thesis, and STEM microcontroller learning projects

Important Notes:

• Active vs. Passive Difference:
• Active Buzzer: Has an internal oscillation circuit; simply applying DC voltage (HIGH signal) produces a continuous tone.
• Passive Buzzer: Requires an external PWM frequency signal (such as tone() in Arduino) to generate sound and musical tones.

• Observe polarity when powering: The pin marked with a plus sign (+) or the longer pin must be connected to the positive control line (GPIO/VCC), and the shorter pin to Ground (GND).
• Do not exceed 8V DC continuous voltage to prevent damage to the internal piezo diaphragm.
• Leave the top protective sticker intact until soldering/assembly is complete; remove the sticker afterward for maximum sound volume.

Package includes

• 1 x 5V DC Piezo Electric Buzzer