NC wrote:
I am trying to find a security light that has 3 settings:
1. on/off by PIR
2. On
3. Off.

Its easy to add an isolation switch to turn it off, but not many seem to
have a user override (using a simple wall switch inside the house) to
put the light perm on.
Anyone recommend a particular model that will do this ?

Essentially all of them - if you wire it using 4 way cable, and
connect it up to the choccy block bit that normally connects the circuitry
alone to one side of the lamp.
Do check that the lamp is switched live first.