OP
What's the model number?
More characters.
It is this one...
https://www.NoLinkingToThis/p/erbau...on-ext-brushless-cordless-impact-driver/162fv
My only issue with it , is seems all or nothing ( although it claims variable speed ) when you pull the trigger. Its a bit of a beast.
My old hitachi had a better degree of variable control and I knew how much welly to give it.
I would happily use my old drill on a consumer unit ( I woudn't ) but I would feel confident to get the correct tightness
The Erbauer I wouldn't go anywhere near a terminal screw with it