The 4M KidzLabs Magnetic Intruder Alarm is a fun and easy project that involves activating a magnetic switch with the use of a magnet.

Learn how to build an intruder alarm - perfect for keeping your little sister or brother out! This is an excellent kit for learning how a magnetic switch works in an electric circuit.

The simple construction of the alarm box is required.

Requires 2 x AAA batteries (not included).

Suitable from 5 Years