4M - Magnetic Intruder Alarm

Availability: In stock
Build an alarm based on how a magnetic switch works in an electrical circuit. Ages: 5 years+
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.
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Clothing - Single Size Conversion (Continued)
UK 18 20 22 24 26
European 46 48 50 52 54
US 14 16 18 20 22
Australia 8 10 12 14 16