This 12mm Electronic Piezo Buzzer is a compact, high-performance audible signaling device designed for a wide range of electronic applications. Optimized for operation at 9V, it remains highly effective across a voltage range of 6V to 12V, providing a clear and consistent alert tone for security systems, industrial machinery, and DIY electronics.
Optimized 9V Operation: While versatile across 6V–12V, this buzzer is tuned for peak performance at 9V, making it ideal for battery-powered projects.
Ultra-Compact 12mm Profile: The small footprint allows for easy integration into space-constrained enclosures and handheld devices.
Pre-Wired for Convenience: Features durable red (positive) and black (negative) lead wires, eliminating the need for complex soldering directly onto the buzzer body.
Clear Audible Output: Produces a sharp, high-frequency tone that is easily heard over ambient background noise in workshops or commercial environments.
Low Power Consumption: Piezoelectric technology ensures minimal current draw, extending the battery life of portable equipment.
Operating Voltage: 6V – 12V DC.
Nominal Voltage: 9V DC.
Diameter: 12mm.
Wiring: Color-coded lead wires (Red/Black).
Type: Piezoelectric Audible Alarm.
Security & Alarms: Used as an audible indicator for door sensors, entry alerts, and localized security panels.
Industrial Equipment: Provides status signals or error alerts for control circuits and automated machinery.
DIY & Prototyping: A favorite for Arduino and Raspberry Pi enthusiasts building timers, metronomes, or obstacle sensors.
Household Appliances: Integrated into microwave ovens, washing machines, and timers for end-of-cycle notifications.
Can I use this with a 5V microcontroller like an Arduino? While the buzzer is rated starting at 6V, it will often produce a faint sound at 5V. For full volume, we recommend using a transistor to switch a higher voltage source (like a 9V battery) to power the buzzer.
Does it matter which wire I connect to positive? Yes. These buzzers are polarity sensitive. Always connect the Red wire to the positive terminal and the Black wire to the negative/ground terminal to ensure correct operation.
Is this a continuous tone or a pulsing beep? This is a standard piezo element that typically produces a continuous tone when constant DC voltage is applied. To create a "beeping" sound, the power must be pulsed by your control circuit.
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