HALJIA Passive Low Level Trigger Buzzer Alarm Module Compatible with Arduino

Passive buzzer, need input oscillation frequency in the I / O ports, and the buzzer will sound Module using S8550 transistor drive Operating voltage: 3.3V~5V Fixed bolt holes for easy installation Module interface description (3-wire) Passive buzzer, need input oscillation frequency in the I / O ports, and the buzzer will sound- Module description:- Module using S8550 transistor drive- Operating voltage: 3.3V~5V- Fixed bolt holes for easy installation- Small PCB size: 3.2cm x 1.3cm- Module interface description (3-wire)- VCC external 3.3V-5V voltage (can be directly connected to the 5V microcontroller and 3.3V microcontroller)- GND external GND- I / O external microcontroller IO portPacking List:1 x HALJIA Passive Buzzer Module