Vintage Children’s Creative Build Your Own Room Alarm 

Have a fun learning experience with your child and Discover how a burglar alarm works with the Room Alarm Lab from Creative This kit includes everything your child needs to build a working alarm for the bedroom door The alarm measures 3.5''W x 3.5''H and requirse a 9V battery (not included) 'Keep Out'' sign included with the kit - suitable for children 8 and over Age Group: adult.