These surge protection devices intended for computer networks are specially designed for securing a faultless data transfer within computer networks category 5. They protect input electronic circuits of network cards against damage caused by surge effects in the Lightning Protection Zones Concept at the boundaries of LPZ 0A(B) -1 and higher according to EN 62305. It is recommended to use these protection devices at the input of protected equipment. Models: PZH PSK*/100M 5cat is a printed circuit board intended for mounting into PSK 10 which is appropriate for installation into 19” rackmounts. PZH PSK 2/100M 5cat designed for protection of two pairs has LSA-PLUS connector at the input side and RJ45 connector at the output side. PZH PSK 4/100M 5cat designed for protection of four pairs has RJ45 connector at the input and output sides.