DerbyBoy wrote:

It amazes me how the individual photocells turn them all on within a few
minutes when the daylight starts to fail. Amazing accuracy and consistency.

So, they're not wired the way they used to be with a master cell or
timer turning the whole street on and off, then?

Then again, making and selecting photocells with a couple of percent
difference between a batch is trivial.

--
Tciao for Now!

John.