Model CMD-4MR Use the CMD-4MR carbon monoxide detector for single sites when generator shutdown is NOT desired, 12 VDC operation, Features a state-of-the-art sensor that is unaffected by common cleaning solvents, Lowest current draw of any Fireboy-Xintex CO Detector, UL 2034 Listed for Marine use, Product : XINTEX CARBON MONOXIDE DET 12V CO SENTINEL Manufacturer : XINTEX / FIREBOY Manufacturer Part No : CMD-4MR UPC : 619749000051 SKU: CW28164