Meross CS11 Dual Sensor Smoke and Carbon Monoxide Alarm/Detector for Home | 10-Year Battery Carbon Monoxide Detector, Smoke Alarm for Home with Test/Silence Button, 85dB Fire Alarm, EN 14604 & 50291

Very happy with this device - well two of them. I had Nest smoke detectors for 10 years but apparently they are so intelligent they stopped working as 10 years is the limit for a detector device? Also Nest has gone down the pan since Gxxgle bought them.So one upstairs and one down, virtually the same size so didn't need to drill more holes in the ceiling.And a fraction of the price.I guess I'll really only know the value of these if the worst ever happens but for now I have peace of mind.

Great choice to replace obsolete NEST Protect after sensor life ended.

Easy to install. Comes with all fixtures

Good luck slotting the alarm into the holder if you're mounting this on the ceiling! Its slimline design (very neat!) means it can be tricky placing the alarm into its holder.Too early to really give proper feedback, although I was hoping for this to be "smart" (as most things from meross tend to be). I haven't noticed the light that flashes regularly to indicate that the detector is working, which is good or bad depending on your take.

Easy to setup. I also tested it in my bullet grill with a lot of smoke, it beeps lodly. This is the cheapest option if you have fireplace to detect carbon and fire at the same time. Too bad it does not connect to Meross app. It has sealed battery which should match the life of the sensor, 10 years. Quality of Meross devices is one of the top. It it very compact, perfect for low ceilings.

Meross is the best

The alarm is slim and unobtrusive and easy to test once installed by simply pressing the middle of the alarm. It is also easy to see the green flashing light to show the alarm is working once the alarm is up. The alarm arrived with the back mounting plate already attached to the alarm and it was really difficult to get this off so that we could install the alarm - once up though the alarm feels well secured. Before securing in place you have to get a screwdriver to activate the alarm which is a bit fiddly. This alarm is ideal for a static caravan or small home space where you can replace the need for a separate smoke alarm and carbon monoxide alarm with this one alarm covering both. The alarm sounder is really loud, testing works well, but from what I can work out there is no difference between the alarm sounder for CO2 and for smoke. You need to be very careful not to think the alarm is malfunctioning if it appears to be going off for no apparent reason ( which our old smoke alarm did a lot!) as it could be alerting you to the presence of CO2.I think as this alarm is a 2 in 1 it represents good value for money and is very useful for the right type of space.

This product certainly does the job it’s ment for