How‘s a combined fire and carbon monoxide alarm ？

Smoke alarms detect fires as early as possible to give the occupants time to leave a building. Carbon Monoxide alarms warn occupants about any presence of carbon monoxide gas, which is known as the silent killer. The combined fire and carbon monoxide alarms in this article detect both of these dangers, smoke and carbon monoxide, to protect lives with the minimum of space taken up by detectors.

The SR-821THS combined fire and carbon monoxide alarm from Sumring is designed to provide audible and visual warning of both dangers within a single alarm. Ideal for bedrooms, living areas and downstairs hallways.  meantime, Ideal for use in homes with gas or solid fuel heating and cooking appliances. Protection against two of the biggest risks in the home combined in a single unit. the optical smoke sensor is quick to detect slow smouldering fires, whilst the CO sensor uses advanced technology for improved detection.

 Sumring's market-leading optical smoke detection technology greatly reduces the number of false fire alarms, while the carbon monoxide sensor will warn occupants with a sounder to the people of this deadly gas which is undetectable by human senses. 

You never know what kind of hazard will strike your home, or when. That's why we recommend technology that can detect carbon monoxide (CO)  as well as smoke and fire（combined fire and carbon monoxide alarm）. You'll get the most protection from devices that can quickly and accurately detect and respond to a range of threats.
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