This Science Museum assembly kit makes an alarm you can install on any door.
This fun science project is a working intruder alarm - opening the door pulls a trigger which completes a circuit, sounding the electronic alarm. The contents include a plastic intruder alarm case set with cover and base platform, battery holder with switch and wires installed, metal pegs, plastic pegs, trigger plate, wall mount, string, double adhesive tape & door plate all with detailed instructions in full colour. Fun present for all those boys and girls wanting to keep siblings out of their room!
Boys are fun-loving and intelligent creatures who enjoy life and get excited when you buy them cool presents. A sure-fire way to bring a smile to any boy’s face is to give them chocolate. They also love remote control toys and being creative, as well as gadgets and unusual books to read.