Active Buzzer Alarm Module

Availability: 2778 items
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module uses S8050 triode drive
working voltage 3.3V-5V
with fixed bolt holes for easy installation
small board PCB size: 3.2cm * 1.3cm
When the I / O port is input high level, buzzer Voice

Pin Definition :
Vcc : 3.3-5v
GND : The Ground
I/O : External MCU IO port

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