Possibly just a generic sticker that gets stuck on anything and everything that has a glass lens ? regardless if its replaceable or not...Thanks. Odd if that is what it means as it appears to be a sealed unit apart from the cable entry and mount.
I never sleep well in this heat , been waking up around 5.30 most mornings
It's time you painted it brown.
I don’t think there’s any changes since blue on that particular page….
It's an important symbol, the front glass on some light fittings is essential for blocking harmful UVC.
That's a bummer. At one time the BT master socket might have had an earth wire so the SPD would drop common mode surges to earth, but not seen that for ages. Fine if its a old fashioned analogue phone only connected the the phone line, but with most stuff now being powered that lack of common-mode protection means it has to deal with several kV internally.
Indeed, the loss of beer money is sad but nothing compared to what some folks have to face as you say.
