Features:
100% brand new and high quality
Set bolt hole， easy to assemble.

Specifications:
Material:ABS
Color: Blue
Work Voltage: 3.3-5V .
PCB Dimension: 3.1cm*1.3cm.
Color: Blue

Pin Definitions :
VCC : 3.3V-5V
GND : The Ground
I/O : I/O Interface of SCM

Package includes:
1 x Active Buzzer Alarm Module