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Amazon.com : Wireless volumetric PIR Motion Sensor Anti-Theft Detector 120 DB Volume Home Alarm Compatible with All Control Panels (PB68-2PCS) : Electronics
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Amazon.com: Rational 44.00.670, Water Volume Sensor with Wire : Industrial & Scientific
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Sensor, IR, Carbon Dioxide (CO2), 0 - 5% volume range by RKI Instruments: Amazon.com: Industrial & Scientific
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Driveway Alarm Wireless, STECHRO Motion Sensor Alarm Outside Weatherproof Motion Detector USB and Battery Operated 600Ft
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Amazon.com: Simple Deluxe 650ml/22oz Automatic Soap Dispenser, Touchless Operated Infrared Sensor Soap Dispenser, Adjustable Soap Dispensing Volume, Suitable for Bathroom, Counter or Kitchen : Home & Kitchen
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Rational 44.00.670 Water Volume Sensor with Wire: Amazon.com: Industrial & Scientific
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Amazon.com: Touchless Automatic Soap Dispenser w/Adjustable Volume Control & Infrared Motion Sensor, 13.5oz Liquid and Hands Free Electric Soap Dispenser for Bathroom Kitchen Home and Shower, No Foam : Home & Kitchen
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Amazon.com: Motion Sensor Alarm, Remote Control Wireless Infrared Home Security System,25-120dB,3 Door Alarm Modes,17 Chimes,4 Volume Levels PIR Indoor Motion Detector Alert for Home Shop Store Driveway(2Pack ) : Electronics