Has anyone had experience of the lamps/fittings:

http://www.all-lighting.co.uk/p6804/...t-with-pir.htm

It's the 36W spiral-wound CFL security light, with PIR detector and
timer.

The questions a

How well do they work in cold temperatures?

Is there a mechanism whereby they can be turned on for long periods,
such as an evening, as the timer only goes up to 7 minutes?

The maker's web site doesn't mention these aspects.

TIA

Terry