Learn the science of connecting an electric circuit. Construct your own door buzzer and place it behind your door. It’s cool and fun!
-50%
KidzLabs-Spy Science Intruder Alarm
$29.99
200 in stock
$59.98 $29.99
200 in stock
Learn the science of connecting an electric circuit. Construct your own door buzzer and place it behind your door. It’s cool and fun!
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