- +100 8 % $1.15
- +300 10 % $1.12
- +500 13 % $1.09
- +1000 15 % $1.06
Buzzers can be categorized into two different types – active buzzers and passive buzzers. An active buzzer has a built-in oscillator so it can produce sound with only a DC power supply. A passive buzzer does not have a built-in oscillator, so it needs an AC audio signal to produce sound.
This module is sold in two types, Active High or Active Low.
Features of Passive Buzzer Alarm Sound Module:
- No oscillation source,need square wave(frequency 2K-5K ) to drive
- Work Voltage:3.3-5V
- PCB Dimension : 3.3cm*1.3cm