GRAY RHINO Carbon Monoxide Detectors Portable for Travel Powered by Battery CO Detector with Alarm 5.3"
Travel CO DETECTOR by FORENSICS | Carbon Monoxide Low-Level 9ppm Alarm | Super Small Size & Stylish | iPhone White Color | Easy One-button operation | - Amazon.com
Carbon Monoxide Detector with Carry Pouch and Batteries - ET110 | Klein Tools
Gas Sensors Pocket CO, Model 300 – Digital CO Detector & Dosimeter - Gas-Sensing.com
CEM CO-181 Pocket Carbon Monoxide CO Gas Meter Tester Detector Beeper Alarm | eBay
SCM4 - Carbon Monoxide Detector - Digital & Handheld CO Detector