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4M - KidzLabs - Magnetic Intruder Alarm
Special Price
$21.90
$26.00
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$4.10
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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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