Buzzer for Arduino (Passive and Active ) Size:Active AO: Analog Output

AO: Analog Output

Fine workmanship and good performance

MIC: 4 analog microphones

DC-: module DC power supply negative (trigger terminal negative voltage)

Formaldehyde Maximum Consistency Error: <± 5%

Buzzer for Arduino (Passive and Active ) Size:Active AO: Analog OutputA buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric. Typical uses of buzzers and beepers include alarm devices, timers and confirmation of user input such as a mouse click or keystroke. Buzzer is an integrated structure of electronic transducers, DC power supply, widely used in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers and other