BLACK+DECKER Carbon Monoxide Alarm and Detector - 10-Year Sealed Battery, 10-Year Sensor Life, CO Alarm for Home, with Test Button, Portable

HEIMAN Carbon Monoxide Detector CO Detector with Digital LCD Display, CO Alarm 10-Year Service Life, Carbon Monoxide Meter BSI Certified According to EN 50291, Battery Replaceable

HEIMAN WLAN Wi-Fi Carbon Monoxide Detector, CO Detector 10-Year Service Life, EN50291, Smart Carbon Monoxide Detector with Tuya & SmartLife App, Portable (WS-725ES)

HEIMAN Radio Networked CO Detector, CO Alarm Carbon Monoxide 10 Year Sensor - Batteries Replaceable 85 dB Carbon Monoxide Detector for Home, Portable, Battery Operated (1)

Heiman Co 723ESY Carbon Monoxide Detector with LCD Display, 5 Year Battery Life, 10 Year Sensor Life, Test Button