Alarms & Door Bell

Regular price $16.49

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+