... protecti ApplicationsBYX-RJ45 surge arrestor is designed for the ethernet network,token-ring,They applied for the various diffrent lightning protection ... LPZ1 and LPZ3.Be suitable for various computer network (ethernet network,token-ring,)Server,Router,hub,Broad hand etc.FeaturesSmallreturn circuit cross-section ... With over voltage and over current perotective funciton. surge protection device