UM3561 All in One Sirens

All in One Sirens using IC Sound Generator UM3561

This is All in One Sirens using IC Sound Generator UM3561 Electro Suite, the heart of this project is IC UM3561, as Three Siren Sound Generator.

Read more: http://electrosuite.com/audio/sirens/all-in-one-siren-using-um3561/#ixzz1VHiQbvwN