The combined smoke and carbon monoxide detector features a sleek and smart design –way better than some competitors. You can tell that you have a superior quality smoke and carbon monoxide detector from the face of the device. The front face is fitted with an LCD to show real-time carbon monoxide levels in ppm, two LED indicators, and a testing button.
The device runs on a 9V battery that is included in the sale. It understands the surrounding environment and monitors the levels of carbon monoxide in real-time. The red indicator light on the face lights up when there is a high carbon monoxide concentration in the house or surrounding. The 85dB alarms go off whenever the concentration of carbon monoxide reaches toxic levels. It is loud enough and can awaken even deep sleepers. However, one downside of this device is that you will have to dismount it from the wall if you ever need to replace the battery.
If the battery gets low, the device will produce chirping sound, and the power LED indicator will have turned from green to red. You will, therefore, have advanced knowledge of the power levels before it goes off. Necessarily, you should not wait for the power warning since the power indicator is visible all the time. With the combined smoke and carbon monoxide detector in your house, you can act fast against unwanted fires and smoke. The device is also a lifesaver since fire may start at night when everyone is asleep.
The BQQZHZ Combination Smoke and Carbon Monoxide Detector is a Carbon Monoxide Detector made by BQQZHZ. As of July 14th, 2020, it costs $19.99 on Amazon.com. It's ranked #1 on our list of the Best Carbon Monoxide Detectors of July 2020. We Highly Recommend This Product!
Yes, it comes with mounting plates and screws.
The blue display appears only when the alarm is on. Do not worry that the screen is not lighted.
When the battery runs low, the smoke alarm will make a chirping sound once every 50 seconds.