Active alarm buzzer driver module
- үнэ: 2,500 төг
Descriptions:
- Work Voltage: 3.3-5V
- With fixed bolt hole for easy installation
- PCB Dimension: 3.3 x 1.3cm
- DuPont line length: 21cm
- Module adopts 9012 transistor drive
Feature:
No oscillation source, need square wave (frequency 2K-5K ) to drive.
Sound frequency control, you can make a “do re mi fa sol la si” effect.
Pin Definitions:
VCC : 3.3V-5V
GND : The Ground
I/O : I/O Interface of SCM
