Active buzzer Voltage: 5v Battery: 9v Color: Multi-color Package contents: Combo of 4 - buzzer with hi-wi battery and connector 5V active buzzer with 9v hi-wi battery and battery connector.Buzzer for science fair projects. Create your own circuits with these buzzers. Connect it to a battery and a key switch to make your own morse code circuit. Package include: 2 x buzzer 1 x battery 1 x snapper.
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