Specially designed for ac power line protection against damaging high voltage surges from lightning & inductive switching. Providing protection for equipments or instruments whose power consumption is below 10a We provide a complete product series to protect different telecommunication or video signal transmission devices. Ars-004-s45 is perfect for internet equipments, ars-004-n11 can be applied to protect telephone, fax machine, xdsl or adsl devices, and ars-001-rxx is designed to protect surveillance camera and cable tv line. For this model, we inlcude several different options of connectors, f female, f male, bnc female or bnc male connector.