Detail: 

- This circuit is the flashing light circuit. 
- Whenever there is any sound, the circuit will work, and if the any sound stops, the circuit will not work.

Technical specifications:

- Power supply: 220-240VAC.
- Adjustable sensitivity of detect the sound with potentiometer.
- There is the switch start point for test the circuit.
- PCB dimensions : 2.01 x 3.08 inches.
- Recommended Housing : FB03