Three sirens in one Circuit

This is a siren schema diagram Here I have used UM3561 schema diagram.This schema can be operated with 3V.It can generate 3 sirens.Here I have used IC 2SC9013 you can use the same IC or similar IC. Use 8ohm 0.2W speaker.




Note:-

* Dont use more than 3V
* Dont use this for unnecessary things
* Build this schema on a PCB