It’s an interesting discussion what works and what doesn’t in terms of deterrence
Like you say I remember being told not to fit any exterior lighting in an equipment yard for the reasons you outlined
He was paying and reckoned it would make it easier for thieves i dunno
I can recall voltages down to maybe 200 -210 can't remember exactly
That would be on bad single phase domestic
supplies .
Also loss of neutral in installation 3 phase distribution circuits causing equipment failure and same with external pen failure
No sensitivity or lux and just 30 sec on-time . Im happy enough with it
It was a relief after all the time setting up lights with 3 controls for customers to the best of my ability
What is the issue or not
Those numbers always seemed out of whack to me
My assumption always was they were a get out of jail free card for the DSOs( correct term?) rightly or wrongly
Yes the slow startups on discharge lighting and the short on-times affecting lamp life
Don't think much about that now
I still have a trusty 15w incandescent bulb on an older pir , newer bulbs wouldn't work on it
Not sure there’s much need for sleeving cables on new work
Places that don't allow it seem to manage ok
Top of my head thought as usual so could be completely wrong