Check the listing for details. 12V RV Propane Gas Detector for Trailer, Camper. Color: White, Condition: New. Listed at 30.99 USD. RV Propane Gas Detector for Trailer, Camper, Motorhome(White) POWER SUPPLY：12V DC OPERATIONAL VOLTAGE：8-16V DC SAFETY FIRST: Invisible propane gas leaking into your sleeping space can cause dizziness, headache, and worse. Our propane leak detector for your RV lets you know the moment there is a problem, so you can fix it immediately. REAL-TIME DIGITAL DISPLAY: This RV propane alarm features a digital screen that shows real-time propane value (%LEL) clearly, so you'll know when it's time to react and fix a problem. 85dB AUDIBLE ALARM: When propane value is over 5% LEL (defaulted), our propane gas detector produces a loud enough alarm to guarantee you can respond quickly, even when sleeping or outdoors. There is also a TEST/MUTE button that lets you test and silence unwanted triggering.