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Portable CO Detector 3-in-1 Carbon Monoxide Detector, Alarm Temp/Humidity Detector with Lanyard and Magnetic Suction Function, Mini CO Monitor
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SMART SENSOR Handheld Carbon Monoxide Meter with High Precision CO Gas Tester Monitor Detector Gauge LCD Display Sound and Light Alarm 0-1000ppm - Walmart.com
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Carbon Monoxide Detectors Portable Temperature Detector/Humidity Sensor/Air Quality Meter Smoke CO Gas Monitor [3 in 1] Alarm
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