Amaze your friends and family with a cool voice recorder, a surprise message box, a light sensor fridge message, a morse code machine and more. Over 10 projects and applications ideas: door bell, drawer alarm, fridge alarm, treasure guard, solar alarm, surprise box, light sensor intruder alarm and more.
Includes: essential blocs for building all kinds of different alarms.
Requires: three AAA batteries NOT included.
Ages: 5+
