Product Description

The circuit illustrated here is used as an Burglar alarm. LDR is kept at such a place that when thief enters our house then a shadow will fall on the LDR. A small beam of light source is also needed to supply continuous signal to LDR. The circuit is constructed using NE555.
Product Features

• Audible output on simply touching.
• Safe and easy to perform.
• Descriptive operating manual with procedure.
• Circuit diagram with PCB Layout for better understanding.