First Alert CO400 Basic Battery Operated Carbon Monoxide Alarm
Carbon Monoxide Detector - Portable Travel Personal Low Level Fast Response Vehicle Aircraft (Lanyard) - Amazon.com
Hembisen Handheld Carbon Monoxide Meter with 12“ Gooseneck Tube, Portable CO Detector Alarm Tester Monitor Sniffer, Easy to Read & Use, UL2034 - Amazon.com
Airgas - B86BWC3M - BW Technologies by Honeywell BW Clip™ Portable Carbon Monoxide Gas Monitor
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Carbon Monoxide Detector Plug in - Hembisen Portable Carbon Monoxide Detector for Travel,Plug in CO Detector with Digital Display for Apartment/Home/Kitchen,Easy to Read & Install - Amazon.com
Portable CO Detector 3-in-1 Carbon Monoxide Detector, Alarm Temp/Humidity Detector with Lanyard and Magnetic Suction Function, Mini CO Monitor with 1000mAh Battery, for Home/Travel/Outdoor - KENTFAITH