"Andy Burns" wrote in message
...
On 16/10/2007 19:25, Franko wrote:

Thanks for the replies but the line in the description of this sensor
"Pre-calibrated to allow for a 10 minute warming up period for sodium or
mercury lighting" leads me to believe that it wouldn't work quickly
enough to switch on the bulkhead lamps immediately the feed becomes live

plenty more to choose from if not sure

http://www.tlc-direct.co.uk/Main_Ind...s_1/index.html

Thanks Andy,
as I have never used standalone sensors before, I'm a bit flummoxed - do you
think that any of these would be more suitable than the other for my
application, i.e. instant power to my lights during the hours of darkness ?
Cheers.