4M Logiblocs E-Building Blocks System Secret Recorder Kids 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 spy gadgets like a door chime, surprise message box and Ghost fridge. Recommended for ages 5 years and up and requires three AAA batteries (not included).