This is a push-button switch suitable for use in single-point induction systems on vehicles with petrol injectors. The switch can be set up to work with standard AEB 1050 senders or with 0-90 ohm senders. It can also be set up to change to LPG on acceleration or deceleration. It has a level display in the form of 4 green LEDs and 1 red LED indicating reserve. There are also LED indicators showing which fuel is being used.
Fitting instructions can be found here.