



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.
The simple construction of the alarm box is required.
Requires 2 x AAA batteries.
Ages 5 and over.
All products are 100% authentic. We ship locally from Singapore and are also available at Forum and Marina Square. Thank you for supporting The Toy Folks!
Pickup: Free (2 - 1 Working Days)
Delivery: $5.00 (1 - 3 Working Days)
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