Keep Out! Kids Door Alarm. Build your own Key Card Security System for your bedroom!

Burglars beware! If activated, the alarm voice says 'KEEP OUT', before the siren sounds. Swipe the special key to turn your alarm on. Swipe the key again to turn it off!

Contains everything you need to build a computerized talking door alarm:

• 24 page book filled with fascinating facts about security systems
• 2 key cards with stickers
• Circuit board with components you connect yourself, just twist wires!

For ages 7 and up. Requires tape and 2 x AA batteries, not included.