3.3-5V Alarm Active Buzzer Sensor Module
3.3-5V Alarm Active Buzzer Sensor Module
Description
1 .module USES 9012 transistor driver
2 .working voltage 3.3 V-5 V
3 .has fixed bolt hole and easy installation
Seven little board PCB size: 3.3 cm * 1.3 cm
module interface specifications (3 wire):
1. VCC external 3.3 V-5 V voltage (can be directly and 5 V single-chip microcomputer and 3.3 V single chip connected)
2. GND external GND
3. I/O external microcontroller IO mouth
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