Fireboy-Xintex 1B-R Marine Gasoline Detector The Fireboy-Xintex Marine Gasoline Detector can keep you safe by proactively detecting any vapor issues before they develop. The remote sensor monitors the bilgeengine compartment during and after fueling. Features both LED warning lights along with a 68 dBA sound alarm. Specifications Fume Type Gasoline Sensors Included 1 SilenceTest Button 68 dBA alarm Voltage - Input Range Volts 9-30v Generator Shutdown No Current Draw 12VDC Blower Relay No Click