The Panamax MOD-AT4 is an add-on signal line module for Panamax protectors. Some Panamax protectors offer a screw in spot for these modules, others require making a small grounding cable to attach to a ground lug. The Panamax MOD-AT4 provides protection for up to 4 phone lines. The input and output sides of the Panamax MOD-AT4 can be hooked up via the 110 punch down block, 4 single RJ-11 cords, 2 2-line RJ-14 cords, or, 1 4-line RJ-45 cord. The equipment side does not have to use the same connection method, so, input might be for example via 2 2 line phone cords, and output can be 4 single line phone cords, very flexible. The clamping level is 260 volts. It has auto-resetting PTCs. Typically, used to protect phones, a small PBX, modems, pay per view ports for cable or satellite, DSL lines before the modem (ADSL or G.Lite). Includes four 4 ft single line phone cords.