Passive Buzzer Digital Module DC 3-5V Active Buzzer Module Audible Visual Alarm Module Low Level Trigger

1. Description:

When the IN port is low, the triode will turn-on. Then the buzzer ring, and small red lamp lights.
      It can be used as the external module of many kinds of circuits, such as MCU.

2. Feature:

Audible and visual alarm. Active and passive can be available.

P.s.

Active buzzer: when the power is on, the input triggering signal is low, the buzzer can sound (continuous sound)

Passive buzzer: only the triggering signal must be a certain frequency, can buzzer

Sound. It generally use the MCU program.

3. Parameter: