Active Buzzer Alarm Module Sensor Beep for arduino smart car GM

Passive buzzer is characterized by:

A passive internal sources without shocks, so if the DC signal can not make it with a tweet. Must 2K ~ 5K square wave to drive it
2 sound frequency controllable, you can make a “more than a meter hair Suola Xi” effect.
3 In some special cases, you can reuse a control and LED mouth

Active buzzer is characterized by:

An active internal buzzer with shock source, so long as a power will be called
2 program easy to control, SCM can allow a high and low sounds, while passive buzzer can not.

One module description

A module using 9012 transistor drive
2 Operating voltage 3.3V-5V
6 with fixed bolt hole for easy installation
7 small plates PCB size: 3.3cm * 1.3cm