PTF-51-ENG/PoE/Micro/T is a new miniature surge protector that uses the Extreme No Ground solution. It is designed to protect LAN networks where there is a problem with grounding the PE line to individual camera points or other LAN end devices. The device can be used to protect outdoor cameras, but the protection will be limited to eliminating small electromagnetic impulses induced in the LAN cable. It works with 10-BaseT and 100-BaseT LAN networks, based on UTP 5 or 6 category cables. Its small size and built-in RJ-45 plug allow for easy connection and hiding of the device in small enclosures. It is ideal for protecting IP industrial cameras equipped with original bases that hide accessories and all connections. The protector protects against the effects of surges, lightning strikes, and acts of vandalism (such as stun guns) It individually protects each transmission pair from surges induced within individual pairs and within individual groups of pairs used for PoE power supply.