nigelhocking

I do not know what type of Sigma system i have got but the sensor is on the windscreen and the keypad is on that which goes from 1 through to zero ( there is no * or #), my problem is i cannot reset the alarm and immobiliser. Are there any codes i can put into the keypad to reset the system or any suggestions to help.
On the cable going into the main unit it has a part no---WL9502 if thats any help.

Thanks everyone.

nige