It is hooked up to the electrical system of the rv. Keep your rv adventures safe with the vitite rv carbon monoxide & propane detector That way it’s easier to tell if there is an rv propane leak
Zkmiles R501 RV Propane Gas Detector for Motor Home, Travel Trailer
Because propane gas is heavier than air, rv manufacturers install a propane detector close to the floor of the rv, to hopefully sound the alarm if there is a propane leak so you can evacuate (and turn the propane valve off).
