Install this do-it-yourself alarm in your bedroom and stop those "unwanted intruders"

Comes with a cyber-look transparent casing

The very cool spy gadget includes a plastic platform, accessories, metal pegs, electric buzzer, wires, string trigger, and battery case

Requires two AAA batteries (not included)

Recommended for ages 8 years and up

Connect the electrical circuits to construct a door buzzer

Contains plastic platform, accessories, metal pegs, electric buzzer, wires

Also includes string trigger and battery case

Requires two AA batteries (not included)

Fun and educational