Portable CO Detector 3-in-1 Carbon Monoxide Detector, Kentfaith Alarm Temp/Humidity Detector with Lanyard and Magnetic Suction Function, Mini CO Monitor with 1000mAh Battery, for Home/Travel/Outdoor
SKU: GW40.0008
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Call your local Fire Department, see if they have the $3000 tool they use, then, they will be HAPPY to check your tool, and your building, no charge!
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The test device detects gas in a general area. It is not a pinpoint gas location detector.