We purchased this with other lights for our new house build so all installed by lic electrician.

Did not work from day one. I have always had little success long term with sensor lights as they all seem to be made in the land of "soon to be landfill". Thought this time pay a bit "extra" for something , only to find it is still rubbish , more landfill , why do they keep using our earths resources to make crap that goes straight in the bin ?