4M KidzLabs Doorbell Making Kit</br></br>Product Description</br></br>Complete an electric circuit for a working doorbell with this kit.;Teach friends and family about converting electricity to physical movement.;With a hangable loop at the top of the unit?? use the doorbell as a functional and decorative gadget in the bedroom.;Assemble the kit with a cross-head screwdriver and power with 2 AA batteries (sold separately).;This kit is recommended for ages 8-15 with adult supervision.;Challenge your child's imagination with 4M toys and kits.;4M educational toys cover a wide range of educational subjects and include science kits?? arts and crafts kits?? robotics kits?? and more.;4M offers a wide range of toys and kits to let you build a clock?? crochet a placemat?? or turn your room into a planetarium--all in the name of making learning fun.</br><br/>http://www.amazon.com/gp/product/B01M9JWHT1