The use of these devices in catalysed engines converted to alternative fuels allows for constant adjustment of the carburetion, and maintenance of the correct air-fuel ratio (stoichiometry) in all operational conditions during alternative fuel mode. The range of products includes models provided with different methods of adjustment. The adjustments can be performed manually by the use of micro-switches, or with the help of more sophisticated instruments such as PCs or hand-held testers.

Model       Notes
D01         Without built-in change-over switch
D02         With built-in change-over switch
D05         With built-in change-over switch
D06/D06-8   Sequential injection system.