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Secret Alarm Kit

SKU: W51072
$12.25 (USD)
Availability: In Stock


This is the perfect device to scare someone who opens your desk or file cabinet. Uses sensitive circuitry to respond to light. The alarm will not sound as long as it is kept in the dark. Operates using a 9 V battery, sold separately.


Type: Project Kits Grades: 6-12



  • Assembly Method: Soldering required
  • Skill Level: 1
  • Material: Printed circuit board, electronic components