What is this external box ?

What is this external box ?

What is this external box ?

Hi. I’m currently considering the purchase of a property that has this unit outside. I can’t get an answer out of the estate agent or owner. Searches online haven’t found anything either. Anyone have an idea what this might be? There’s no writing on the unit either to give me any clues so I thought I’d ask.

by Balgray

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