These SPD are for the protection of equipment installed in communication, control and instrumentation lines. The SPD shape and form can be selected according to the installation location, and the internal circuitry selected according to the line type. Category C2, category D1 compliant RoHS compliant ・ Type: ZP-** This is a thin type SPD (surge protective device) for communication equipment that affords ample protection against induction lightning. ・ Type: CLP-** This is a high withstand capacity SPD (surge protective device) for communication equipment that protects equipment from lightning surges that may enter telephone lines, control lines and other communication lines. ・ Type: KR-** The KRONE LSA-PLUS terminal SPD (surge protective device) boasts a worldwide share of the communication terminals used in MDF and IDF.