A microprocessor-controlled, two-channel gasoline fume detector in a low profile, water resistant design.

Its features include two-channel monitoring capability, plug-in sensors (second sensor optional), fault light alarm, fault lights to indicate a malfunction in either the module or one of the sensors.

A "press to test" button for each channel indicates either an OK or Danger condition.

An Alarm Silence button deactivates the alarm horn .

The system is calibrated to eliminate most nuisance alarms while allowing enough time to take action.