Why are most CO detectors not suitable for a recreational vehicle or house?

Most carbon monoxide alarms are designed for indoor use only (unless otherwise indicated on the packaging). Do not expose to rain or humidity and large temperature variations.

Where can you find out whether the CO detector is also suitable for a recreational vehicle or home?

In recent years the designs have changed somewhat, here are some examples where the CO detector you have purchased is suitable for a recreational vehicles or homes.

Smoke detectors that are suitable for use in a recreational vehicle or home.

10.006.74 - RM218
10.024.76 - RM217
10.025.28 - RM520
FSM-16020 - RM620