We added interconnected smokes last year and were having problems with false alarms... turns out they all were not the same brand, and some brands dont play well with others. So in the process of making them all the same brand I made the one on the first floor a combo smoke/co, and also added a new combo in the basement.
Now I think I am going to have to change the one in the 2nd floor hallway to a combo too, as I thought the CO alarms would sound on ALL detectors, but it only sounds on ones that are combo units.
Now I think I am going to have to change the one in the 2nd floor hallway to a combo too, as I thought the CO alarms would sound on ALL detectors, but it only sounds on ones that are combo units.