Yanmis Active Buzzer Module 3 Wire System 3.3V-5V Buzzer Module with Internal Oscillation Source Light Industry Alarm Sounder

Yanmis Active Buzzer Module 3 Wire System 3.3V-5V Buzzer Module with Internal Oscillation Source Light Industry Alarm Sounder

• Module is driven with 9012 transistor.
• External connection of 3.3V-5V voltage, can be directly connected to 5V micro-controller and 3.3V micro-controller.
• Designed with holes for fixing with bolt, convenient to install.
• Convenient program control, single chip microcomputer high and low level can make it sound, better than a passive buzzer.
• This active buzzer has internal oscillation source, so it will alarm as long as being energized.