Johnny OneSpanner wrote:
Hello -

In response to local burglaries, some relatives have been advised by the
police to install a dusk-to-dawn low-level floodlight in their small (15
metres across) farmyard., which already has motion-activated halogen lamps.

The police recommend a sodium lamp, but are the CFL-based floodlights also
suitable?
Sodium lamps with dusk-til-dawn sensors seem to be quite thin on the ground,
should I use a separate sensor?
Can anyone comment on whether these might be suitable?


http://www.screwfix.com/prods/39148/...ight-Photocell

http://www.screwfix.com/prods/35156/...ell-Floodlight

Thanks.



Can't add much to what others have said (but 70W SON would be my first
choice).

However, I recently brought this stand-alone dusk-dawn sensor from
Toolstation and it's OK (as in good value for money - but not industrial
quality):

http://preview.tinyurl.com/r4q6en

It has a 10A relay and a 6.3A HRC 20mm fuse inside and is rated by the
manufacturer at 1.3kW resistive load.

De-rating for 70W self-igniting discharge lamps (e.g. Osram 70W SONI-E),
it should comfortably switch up to 8 Luminaires.