it is odd why people upgrade to 20 year old stuff. Its a good job it not doing anything important like protecting... btw I have a load of 30 yr old airbags for vw's. Sold as seen get in quick
are you asking cos you don't know and want to undercut to get work?
I don't like using subcontractors its difficult due to the audit process and hoping they will do as asked.
Engineer is for programming the setup of the system
Master is for programming user codes, changing time etc
Standard is for arming disarming etc
There may be slight differences but I don't know that panel