Not doing surveillance? It has windows. It is a box. Mounted on poles that belong to the power company, without power company’s permission or consent.
There is technology like this that picks up on gunshots in an area. Could it be this? There were stories of light poles/power poles that contain hidden microphones going back a couple of years in the UK. Considering the US is right behind the UK in these developments it is no surprise!–S.T. Lloyd