Build your own Intruder Alarm to keep out those pesky brothers & sisters!

And while you are at it, explore how a magnet sets off this cool build-your-own intruder alarm.

It's a great project for exploring how a magnetic switch works in an electric circuit.

Simple construction of the alarm box is required.

Contents as illustrated. fully illustrated instructions included. For instructions in other languages, please scan the QR code included.

Requires 2 x AAA batteries.

Ages 5 and over.

Afmeting verpakking: 16,50 x21,50 x 5,80 cm