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4M Logiblocs E-Building Blocks System Spy Tech Science Kit

Build your own custom alarms with logiblocs! This steam science kit includes color coded, plug-and-play electronic building blocks, Each color coded with unique functions that can be combined to create custom circuits. The kit includes Essential blocks to build a wide variety of detectors and alarm systems, from a screaming banana machine to a metal detector and morse code machine. Recommended for ages 5 years and up and requires three AAA batteries (not included).