My detector does a slow beep when the batteries are low... Thats the only alarm I have ever heard on my present off-road trailer setup. I guess it makes very loud tone noise if it detects CO gas...
The only time I have ever heard a detector alarm was several years ago when I was running my generator sitting on the tail gate of my truck. The detector in my older trailer started making a real loud noise and I noticed my generator exhaust was pointing towards my trailer. Moved the generator exhaust direction and the noise went away...
In my 5th wheel trailer I have a smoke detector on the ceiling and we have tripped it a couple of time cooking on the stove top... It makes a loud noise when tripped as well...
My experience is the slow beeps is for low voltage alarms... The loud noise means business...
Roy Ken
