YinZhiBoo RV Propane Gas Alarm, Digital LP Gas Detector for Trailer, Motorhome,Motorcoach,85dB Loud Alarm,DC 12V - - Amazon.com
Natural Gas Detector Alarm,WI-FI Smart App, UL -1484 Standards Propane Leak Monitor for Home, Kitchen, Camper, Trailer, RV. Plug-in Gas Leak Sensor for LPG, LNG, Methane & Butane Gases - Amazon.com
RYRA WiFi Natural Gas Detector,Smart WiFi Gas Leak Detector with Temperature Sensor LCD Display, Plug-in Gas Leak Sensor for LPG, LNG,Methane & Butane Gases - Amazon.com
Safe-T-Alert Combination CO/LP 25 Series Alarm w/ Trim Ring - Black