Suttle Beige Line Conditioner DSL Phone Splitter untested

These are three pre-owned Suttle 900LCS-50E DSL line filters. Each filter has a beige plastic housing with ports labeled 'Phone' and 'DSL'. A cable extends from the housing, terminating in a clear RJ11 connector. The cables are slightly discolored. The housing shows minor surface wear. Each filter is designed to separate DSL and phone signals on a single line. Untested