25 Series™ Black Surface Mount Propane/LP Gas Alarm (25-741-BL) by Safe-T-Alert®. 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. Notes: Not for Police Vehicle Use These CO Alarms are listed to UL 2034 Residential / RV / Marine Use They are not tested to the OHSA standard for work environments MTI does not recommend use of These product in police vehicles as a monitor for a perceived/potential vehicle defect Specifications: Gas Type Detection: Propane/LP Gas Color: Black Voltage: 12 V Height: 2.5" Width: 3.5" Depth: 1.25" Digital Display: No Mounting Type: Surface Mount Features: Patented Double-Duty Alarm Upgrades single 12V Propane Gas alarms to a dual alarm that detects both Propane Gas and CO Space Saving Compact design for RV's Advanced Technology Alarm Mute button silences alarm while RV isventilated Rapid recovery sensor resets when silenced or reactivates alarm if dangerous levels of Propane or CO remain Reliable. 12V power means no missing or dead batteries to replace Approved. Meets RVIA/NFPA requirements Listed to UL 1484 RV and UL 2034 RV Brand:Safe-T-Alert Part Number:25-741-BL UPC:(contact info removed)33 Alternate MPN:25741BL