20PCS 16R Resistance Passive Buzzer AC 16 Ohm 3V 5V 9V 12V Mini Piezo Buzzer 12085 for Arduino DIY Electronic Part

Use: Power on the computer, we will hear the familiar sound of "beep" a sound, generally indicating that the computer can be used normally, the sound is emitted from the "baby."
The positive and negative poles can be directly inserted and used.
Colour:black

Material:Plastic + Metal

Package Contents:
20 x Buzzer

Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.