MB-2-R Gasoline Fume DetectorIncludes the features of the M-2A:Microprocessor-controlledLow profile water resistant designTwo-channel monitoring capabilityPlug-in sensors (second sensor optional)Fault light alarmFault lights to indicate a malfunction in either the module or one of the sensors, ""Press to test"" button for each channel indicates either an OK or Danger conditionThe MB-2-R adds automatic bilge blower control, The blower is automatically started when a fume level of 16 to 20% LEL (lower explosive limit) is reached and remains on until fume level is safely lowered, A 30 amp relay is standard, The MB-2-R system also includes a test button at the display module to activate the warning lamp alarm horn and blower motorAlarm silence button deactivates the alarm horn calibrated to eliminate most nuisance alarms while allowing enough time to take actionProduct : XINTEX MB-2 FUME DETECTOR Manufacturer : XINTEX / FIREBOY Manufacturer Part No : MB-2-R UPC : 619749211617 SKU: CW10506