3 to 24V Electronic Buzzer Beep Alarm is a mini electronic beeper support DC 3-24V power supply. Electronic Buzzer Beep Alarm produces continuous high-decibel alarm sound up to 95dB. A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric (piezo for short). Typical uses of buzzers and beepers include alarm devices, timers, and confirmation of user input such as a mouse click or keystroke.
40mm diameter and 15mm thickness with 2-wire pigtails easy to connect widely used in the car modification, DIY electronics reminder projects or other areas need a sound alarm.