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This Science Museum assembly kit makes an alarm you can install on any door.
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. Very smart gift for all those boys who want to keep their sister out of their room.
Transforms ANY object into a high volume speaker - just attach it!£14.95
Create, animate & share - poseable figures, tripod & free App.£16.95