A do-it-yourself “screamer” Home and Small Office Alarm in a patent-pending three-component design. No expensive installation, no monthly subscriptions and no waiting. The “Chirp Reply” Key Chain Remote lets you arm and disarm the system with the push of a button from outside the home (up to 60 feet from the Motion Sensor Unit). No codes or keypads to punch, no rushing to beat a timer, no subscription service hassles. The Motion Sensor Unit comes encased in a streamlined shell that will compliment any environment. Also secures sheds, garages and more. Wireless (433Mhz radio frequency). Battery-operated. Approx. 5000 hours standby time. Easy to read battery diagrams on all three components. Fully self-contained.