I have just moved into a rental property that has a Ness D8. The issue is that i just put a new battery in and it keeps flashing "Program". And it wont accept the default mastercode of 123. Is there anyway to reset this code, ie; log into it with a laptop and reset the whole unit? and if somebody has a installation manual for it in a pdf that would be awesome.
Also is there supposed to be a dedicated power supply or just the battery?