440680
9781571457288
Enter the world of high tech security and learn the secrets behind closed circuit video, infrared and hidden cameras, and biometric systems. Readers can build their own door alarm and program it with a secret code. This kit includes a 32-page book with full-color illustrations, easy-to-follow directions, and all the components you need to build your own door alarm. Full-color illustrations. Consumable.McQuinn, Conn is the author of 'Build Your Own Digital Door Alarm' with ISBN 9781571457288 and ISBN 1571457283.
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