<ul><li>Easy to use Electronic Beeper Alarm Sound Buzzer - Ready to Solder, Positive Negative</li><li>Measures 11.8mm diameter and 9.5mm height. Input 5V - 12V - It will be a softer at 3V and very loud at 12V.</li><li>DIY electronic hardware part - so many uses. Easy to solder. Remove sticker label after soldering.</li><li>Common uses for these beepers are confirmation or warning. Can also be used to locate lost toy (drone, helicopter, etc) and so much more.</li></ul><br><br>This beeper buzzer sound alarm part will be useful in many DIY projects. Just solder for 5V-12V power. The sound will be louder with an input at 12V and much softer at 3V. Common use may be for warning, confirmation, security, locating a lost toy (drone, helicopter, etc) and so much more.

Beeper Alarm Sound Buzzer - 2 Piece Set Small 12mm x 9.5mm Electronic Hardware Part for Warning and Confirmation