Universal Replacement, This unit comes with a trim ring to cover existing screw holes and fit newer units into previous installation cutouts. Designed for the Rugged RV Environment. Ideal for Class A Motorhomes, Class B Van Campers, Class C Mini-Motorhomes, Travel Trailers, Fifth Wheels, Truck & Folding Campers. Alarm Mute button silences alarm while RV is ventilated. Rapid recovery sensor resets when silenced or reactivates alarm if dangerous levels of Propane remain. Reliable, 12 Volt power means no missing or dead batteries to replace. Meets RVIA/NFPA requirements. Conforms to UL STD 1484 RV. Case Size: 4.25" W X 2.75" H X 0.75" D, Trim Ring Size: 7? W X 4? H X 1? D.

Universal Replacement, This unit comes with a trim ring to cover existing screw holes and fit newer units into previous installation cutouts. Designed for the Rugged RV Environment. Ideal for Class A Motorhomes, Class B Van Campers, Class C Mini-Motorhomes, Travel Trailers, Fifth Wheels, Truck & Folding Campers. Alarm Mute button silences alarm while RV is ventilated. Rapid recovery sensor resets when silenced or reactivates alarm if dangerous levels of Propane remain. Reliable, 12 Volt power means no missing or dead batteries to replace. Meets RVIA/NFPA requirements. Conforms to UL STD 1484 RV. Case Size: 4.25" W X 2.75" H X 0.75" D, Trim Ring Size: 7? W X 4? H X 1? D.

Double-Duty Alarm. Upgrades single 12 Volt Propane Gas alarms to a dual alarm that detects both Propane Gas and CO. Replaces all Safe-T-Alert Model 40-442 Propane alarms. Designed for the Rugged RV Environment, Ideal for Class A Motor homes, Class B Van Campers, Class C Mini-Motor Homes, Travel Trailers, Fifth Wheels, Truck & Folding Campers. Alarm Mute button silences alarm while RV is ventilated. Rapid recovery sensor resets when silenced or reactivates alarm if dangerous levels of Propane or CO remain. 12 Volt power means no missing or dead batteries to replace. Meets RVIA/NFPA requirements. Conforms to UL STD 2034 RV /1484 RV. Power Supply & Current Draw: 108 mA @ 12 VDC. Operational Range: 12 Volts +/-15%. Low voltage power warning. Operating Temperature: -40° F to +158° F. Case Size: 4.25" W X 1.25" D X 2.5" H.