The Panamax MOD-SPKP 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-SPKP provides protection for 8 bare wires. These bare wires could be outdoor speakers, keypad, control lines, security wires, paging horns, satellite control lines, or other items. The input and output sides of the Panamax MOD-SPKP are hooked up via screw down screws, the max wire size is 12 AWG. Equipment lines that lead outside the building are pathways for surges (sometimes called backdoor surges) to enter the equipment. The clamping level is 47 volts, and, each wire can carry up to 7 amps.