DUAL PROPANE & CO DETECTION – Patented Double-Duty Alarm upgrades single 12V propane alarms to detect both Propane Gas and Carbon Monoxide. Compact surface mount design for easy installation. SPACE-SAVING MINI DESIGN – Small footprint ideal for RVs with limited wall space. Perfect for Class A, B, C Motorhomes, Travel Trailers, Fifth Wheels, and Campers. RELIABLE 12V POWER – Operates on 12v DC for consistent, maintenance-free protection. No batteries required, with energy-efficient circuitry to conserve power. ADVANCED SAFETY FEATURES – Alarm Mute button allows for ventilation while the rapid recovery sensor reactivates if propane or CO levels remain hazardous. Self-resetting for continuous monitoring. DESIGNED FOR HARSH CONDITIONS – Operates in temperatures from -40°F to +158°F.