Magnetic Intruder Alarm - Kidz Labs bubble science finished with a gold coin

finished with a gold coin and delicate natural fibre woven disc

requiring gentle handling to preserve its pristine form

Ian Gynther

these elements create movement and visual interest without excess ornamentation

Magnetic Intruder Alarm - Kidz Labs bubble science finished with a gold coinDon'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. 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. Box size: 167 x 215 x 58mm Weight: 450g