UM3561

Burglar Alarm System using PIR Sensor Burglar Alarm Circuit

A burglar alarm system is an important part of home security systems. This burglar alarm project is based on a PIR sensor, UM3561 and a Speaker. PIR sensor used to detect body motion and UM3561 & speaker to produce a Police siren after any movement detection. Our simple burglar alarm circuit diagram provides an affordable DIY solution for enhancing your home…

Sound Generator Circuit using UM3561 Siren Generator Circuit

While building circuits many times we need to generate sounds like a musical sound or some kind of alerting sound. Instead of building complex circuitry, we have some use full IC to produce the sound like UM66, UM3561 etc. While UM66 have a limitation of generating only one sound, we have UM3561 which is very useful and can generate four types of sound i.e. Police siren,…