Description

Description and specs

Don’t let anyone sneak into your room undetected! 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. 

Requires 2 x AAA batteries. 

Ages 5 and over.