12v Atwood 31011 Carbon Monoxide & LP Gas Propane Detector Alarm RV Trailer Manufacturer 2022 GOOD FOR 7 YEARS AFTER THE UNIT IS POWERED ON. 7 YEARS DOES NOT START TILL THIS UNIT HAS BEEN POWERED ON FOR THE FIRST TIME. WALL CUTOUT SIZE: 3-9/16" WIDTH X 3-7/16" LENGTH X 1" FOR RECESS MOUNT INSTALLATION. THIS UNIT REQUIRES 12 VOLT ELETRICITY TO OPERATE. DOES NOT USE A BUILT IN BATTERY. 3 WIRE CONNECTION. |