On Jul 17, 2:32*pm, Roland Perry wrote:

No its is not the fire alarm.

Inspector Sands is an alert (or alarm if you must) to advise station
staff that a fire alarm point has been activated.

The difference between a fire alarm and a notification that a fire alarm
has been activated is so small that it beggars belief.

No it is not.

As I am one who has been trained, certified, and hold currently the
relevant licences to work on a underground station, I know exactly
what I am talking about.

There is a /significant/ difference between how alert notification
and fire alarm is dealt with.

I presume what you really meant, was to try to differentiate between a
fire alarm and a call to evacuate public from the premises.

You presume wrong then.

--
Nick