Contemporary Square Bracket Lantern - Exterior Wall Light

I’d like to get the contemporary square bracket lantern but wonder if there is an option of one with a light sensor?
There is no PIR version, however, you can wire one up separately: https://www.lightingstyles.co.uk/bulbs-lamps-transformers/pir-microwave-movement-detectors

Will this light be ok on a non sheltered outside wall
Yes, This is an exterior wall light.

I am looking to fix a couple of these onto narrow wooden poles and was wondering what the dimensions of the wall bracket are?
The backing plate that attaches to the wall is 92mm in diameter.