My standard approach (let's say for a luminaire which illuminates a driveway) is to have a switch in parallel with the PIR and a key switch in series with both.
That allows the occupier to override the PIR - let's say that you have to fix your car after dark (in winter) and don't want the light going on and off. It also allows the luminaire to be turned off for relamping (unlikely with LED) or perhaps because foxes are roaming around too much; but not without a greater degree of effort.
My standard approach (let's say for a luminaire which illuminates a driveway) is to have a switch in parallel with the PIR and a key switch in series with both.
That allows the occupier to override the PIR - let's say that you have to fix your car after dark (in winter) and don't want the light going on and off. It also allows the luminaire to be turned off for relamping (unlikely with LED) or perhaps because foxes are roaming around too much; but not without a greater degree of effort.
