Wait, is that not ‘normal’?

Yeah, this is what I was thinking, though I didn’t consider that the sensor facing outwards might get a different lux value if blinds are up or down with the same cloud state. I thought they’d literally be directional, having not had one before. Thanks!

I considered this, but I want it based on outside brightness, as it affects glare in the room. I’d like the blind to be open if at all possible, i.e. when it’s duller outside.

To some extent. But why can’t you just match those with like-for-like accessibly features turned on?