PASSIVE BUZZER MODULE LOW LEVEL TRIGGER

Active Buzzer Module Description: Driven by 9012 triode Fixed bolt holes for easy installation Small size: 3.3cm * 1.3cm PCB Two module interface description (3 wire system) Working voltage: 3.3V-5V VCC: External 3.3V-5V voltage (can be directly connected to 5V microcontroller or 3.3V microcontroller) GND: External Ground I/O: External chip IO port Features of Active Buzzer: Has a built-in sound source Convenient program control Can produce sound with a high or low level of MCU Voice frequency is controllable Differences from Passive Buzzer: Does not require an oscillating electronic signal Can produce sound as soon as it is electrified Cannot be controlled by a passive buzzer.