Active / passive Buzzer Module for DIY Kit Active buzzer low level modules
وصف
Warning Buzzer & Chime
1 module driven by 9012 triode
2 working voltage of 3.3 V to 5 V
6 sets of fixed bolt hole, convenient installation
7 small board PCB size: 3.3 * 1.3
2 module interface specification (3 wire system)
1 VCC external 3.3 V to 5 V voltage (which can be directly connected to 5 V microcontroller and 3.3 V microcontroller)
2 GND external GND
3 I/O external microcontroller IO port