2x Smoke detector. Carbon Monoxide Detector/Co Alarm. Type A Smoke Alarm. Alarm current:≤160mA. Alarm sound pressure:80db/1m. 1xcarbon monoxide detector. Type B Smoke Alarm. Alarm current:<200mA.
eBay
When the carbon monoxide concentration reaches 100PPM or the combustible gas concentration reaches 6%, the LCD screen starts to display the concentration value, and the red LED lights flash and emit a loud voice alarm mode-85 decibels.
eBay
Honeywell BW GASALERT microclip XT Four in one gas detector alarm LEL/O2/CO/H2S.
eBay
SAFETY ASSURED: The FA6813 detector holds a CE & UKCA mark and has been designed to conform to the standards BS EN 50291-1: 2008 and EN 50291-2: 2019. The FA6813’s electrochemical sensing technology enables a fast reaction to rising levels of carbon monoxide (CO), aka ‘The Silent Killer’, helping to keep you and your family safe.
eBay
New unused in box 
eBay
Alternative Product Codes7COC 7COB K7CO. Choose CategoryFoam Fire Extinguishers CO2 Fire Extinguishers Water Fire Extinguishers Powder Fire Extinguishers Wet Chemical Fire Extinguishers Fire Blankets Automatic Fire Extinguishers Fire Extinguisher Stands.
eBay
4 Gas Monitor: X-4 is a portable carbon monoxide (CO), oxygen (O2), hydrogen sulfide (H2S) and combustible (LEL) 4 gas monitor. It adopts a high strength material shell and imported sensors, with a service life of 2-5 years (LEL, H2S, CO: 2~3 years, O2: 5 years).
eBay
FREE STANDING OR WALL MOUNTED: For ease of installation, the Kidde 5CO model can be placed free standing on any surface, or can be wall mounted with the included screws and wall plugs. LIGHTWEIGHT & COMPACT: The 5CO’s sleek design allows this life-saving device to blend into your décor, while remaining uncompromising on its strict quality testing.
eBay