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Solar Wireless Driveway Alarm System Security Long Range IR Sensor Detector Home | eBay
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WatchHound Cell Phone Detection Monitor
Kidde Worry-Free Carbon Monoxide Detector Alarm with 10 Year Sealed Battery | Model C3010
Kidde 10 Year Worry-Free Plug-In Carbon Monoxide Detector with Battery Backup, Digital Display, and Voice Alarm 21029624 - The Home Depot
Skylink HA-300 Wireless Long Range Motion Security Indoor Outdoor Infrared Detector System Kit - Walmart.com
CO alarm with LCD display
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Professional Digital RF Detector
Wire Break Detector
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Home Smart Water Detector (HSWD) by HomeSmartWaterDetector — Kickstarter