Low Glare Half-Moon Exterior Wall Down Light

Could you give me any indication as to the light distribution. We are thinking of putting these around a building but do not want a intense beam of light going down.
These wall lights simply have a lamp and an opal diffuser to the underside. The light distribution is a very broad wash of diffused light.

Does this fitting come with a diffuser or is the bulb open to the elements?
This product comes fitted with a plastic diffuser to the underside providing a wider distribution of light and a degree of protection against water ingress.

Can these exterior wall lights be connected up to a motion detector?
In short, yes.

Is this fitting available in marine grade 316 stainless steel?
This fitting is manufactured from stainless steel with an AISI grade of 304. Whilst this steel has a slightly higher chromium content than 316 it does not contain any molybdenum which is used (particularly in marine grade steel) to increase corrosion resistance. Unfortunately we do not have a version of this fitting using AISI 316 steel.

Can this fitting be supplied with a dusk till dawn sensor?
Not integrally, however you could add a remote dusk `til dawn sensor into the same circuit such as the one available at Electronic sunset timer switch.