4M Spy Science Intruder Alarm
Stop unwanted intruders from entering your room while learning the science of electronic circuits.
- Set includes 1 plastic platform & alarm casing, 1 electric buzzer, 1 electric wire, 1 string alarm trigger, plastic accessories & metal pegs, detailed instruction & fun facts
- Requires 2 AA batteries (not included)
- Ages 8 years+
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