We just got new fire alarms installed in our building. They go off 2-4 times per day and everyone just ignores them. It's enough to toast your bread lightly brown to go off. You can easily hear the neighbours fire alarms. There is no way of removing the battery in the new alarms, the only thing you can do is take it down and stuff it in a drawer somewhere. Not even pushing the button helps. This makes them totally useless, even more so than a car alarm. We got ours exchanged and they go off much less now luckily.