The Kidde KN-COSM-B is a combination of a smoke detector and carbon monoxide alarm. It is equipped with the Nighthawk sensor, the latest electrochemical technology available. It is battery operated and has a talking alarm. The talking alarm announces what the alarm is so that you know what the cause is. The alarm is loud enough to hear when you are sleeping. Along with the voice, there is a horn that sounds also. This is also UL listed. This device is powerful enough to do the job of 2 alarms. It has a safety net, if the batteries are not in the alarm, it cannot be mounted. Another good thing about this unit is that it is affordable.
Other Reviews
I’ve installed installed two of these Kidde brand combination smoke and carbon monoxide detectors in my elder parents home. I have one in my own home as well and have found them all to be reliable and trouble free….(read more)
The fact that the smoke detector did not go off bothered me and I did a bit of reading on the detection systems. Turns out that there are two detection mechanisms….(read more)
We live in a 4 level split home. Our gas furnace is on the lower, 3rd level. Two years ago we had several smoke alarms, but only one carbon monoxide detector on the top, bedroom level of our home. One early Saturday morning we awoke to the voice of this alarm broadcasting, “WARNING! CARBON MONOXIDE DETECTED!” over and….(read more)


