Working voltage: DC 3.3 V-5 V

Mounting holes: 2.7cm

Hole diameter: 0.3cm

Driving method:

There are two common methods of driving. 

PWM output drive method (should work with audion): Drive the buzzer module to the square waves being turned by PWM output. 

You just need some time and duty cycle level PWM valve port and create waves that comes with a frequency required by the continuity buzzer module to drive the module .

Flipping level drive method (a timer is needed): Uses the waves created by regularly flipping level to drive the continuity buzzer module.

Package included:

1 x LDTR-0019 DIY Continuity Buzzer Module For Arduino