The Alecto COA3910 carbon monoxide detector warns you if there's a risk of carbon monoxide poisoning. The sensor of this detector lasts 10 years. That means you can be sure you'll get a notification in case of too high or too low carbon monoxide levels for the next 10 years. The detector gives you a quick insight via the display. It also does so when the batteries are almost empty, or the 10-year lifespan is almost over. Via the display, you can see the exact level of carbon monoxide and the status of the battery. You can easily place this detector with the included base plate, screws, and plugs. This detector doesn't stand out, thanks to the coarse texture. This makes it look like a plastered wall.