Update your RV LP gas alarm to a combination CO/LP gas alarm. Includes all the same great features as our 40 series LP gas alarms and our 60 series CO alarms in one space-saving design. Dual alarms detects both carbon monoxide and LP gas inside your RV. Also detects CNG. 12 volt operational range 7-16V. No false alarm senor technology. UL/CSA listed. 1 year warranty. Flush mount: 6 1/2"W x 2 1/2"H x 1 1/2"D White.