Just phoned my local branch to be met by some arrogant little twerp who explained that Alto is being replaced by Sector. I asked if she knew if Sector products will fit the old Alto stuff to which she replied "No", so I asked if there was anyone else there who would know and again she just said "No".
I said "Surely you should know whether or not one of your own products fits inside another one of your own products?" and she replied "Should I now?!".
I'm really annoyed now, and thanks to her, they will never see any business from me
Just spoken to another branch a couple of miles out, asked the geezer the same question and he was very pleasent and told me exactly what I needed to know
Essentially, Alto and Sector are both made by Electrium and represented by WF Senate, They are essentially the same product but called different names so one will fit the other so to speak. Alto is gradually being phased out and Sector will be the only product available but like I said, exactly the same product but rebranded.