We have one , there was a close in lightning strike just outside a neighbors backyard, maybe 100 feet from our house. Neighbor have several thousand dollars in damaged electrical equipment, we had nothing apparent. About 18 months later cable tv was getting real bad, the service drop cable to our house had failed apparently due to the strike. This would not have been prevented by the SECO device, but everything else in the house survived.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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