MTI Industries 12V 70 Series Safe-T-Alert Flush Mount Dual Propane/LP & Carbon Monoxide Alarm:Meets 1/1/05 requirements set by RVIA for new RV's requiring both Propane detectors and CO alarmsAlso detects Compressed Natural Gas (CNG)/MethaneIncludes 3A relay to control solenoid valve (included) to halt gas flow or shut down a generator during an alarmTest/Reset Button ? Tests all detector functions with one touchResets and Mutes alarm while safety and corrective actions are takenAlarm is fully operational during mute cycle and will re-alarm if hazardous conditions reoccurRV 12 Volt Hard Wired ModelPrevents accidental disconnection during alarmBuilt for the extreme RV environmentOne Year Limited WarrantyUL listed for Recreational Vehicles and Unconditioned Areas This product ships in approximately 1 days