Small Buzzer 12V
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Prices updated: 13 Oct 2026
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About this product
A small 12 V buzzer for audible alerts and indicators in electronics projects, alarms and simple control panels. It is driven by applying 12 V, usually switched through a transistor or MOSFET from a microcontroller. Check the markings on the buzzer to confirm its type before connecting it.
Specifications
- Rated voltage
- 12 V
Frequently asked questions
Can I connect this buzzer directly to an Arduino pin?
No. The buzzer needs 12 V, which an Arduino pin cannot supply. Switch the 12 V supply with an NPN transistor or logic-level MOSFET driven from the Arduino pin, and check the current draw against the transistor rating.
Does the buzzer have a polarity?
Some buzzers are polarised and marked with + and -. If yours is marked, connect the positive lead to 12 V and the negative lead to the switching element. If it is not marked, confirm the wiring with the manufacturer information.
