nokia 'thing' in my premises

Hi everyone, can anybody tell me what I might have in my retail premises and whether its something to be treated with caution and staff be kept away from the area-its labelled Nokia and is a bloody great big thing that is extremely heavy, coated light grey at the top and a darker grey to the bottom. Have attached a pic. Its got power to it but am fairly sure its not in use as I get no bills for it and nobody is sending me money for having it on the first floor of my shop.
Any info much appreciated

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