The HGLN-CAT5-2 provides lightning and surge protection for CAT5 data applications. The unit is compatible with industry-standard IEEE 802.3af Power-over-Ethernet (PoE) devices and 10/100 Base-T Ethernet networks, providing protection to both Ethernet data pairs as well as the PoE DC power feed. High speed semiconductors clamp any voltage, positive or negative on the wires. The limits are +/- 15 volts on pins, 1, 2, 3 and 6 and +/- 58 volts on pins 4, 5, 7 and 8. The unit is compatible with both normal and inverted polarity voltage PoE equipment. Most PoE capable equipment is not protected from surges on it's CAT5 cable. This lightning surge protector is compatible with Cisco legacy network appliance products like Access Points, DC Injectors and other equipment supporting reverse polarity PoE pinouts. EMI Noise Suppression The HGLN-CAT5-2 features shielded RJ45 jacks. This along with the HGLN-CAT5-2's metal housing helps reduce the effects of EMI interference. Additional features include a ground lug and terminal is provided directly on the lightning protector housing providing superior grounding. For maximum protection from lightning on long cable runs, two HGLN-CAT5-2 can be used, one at each end of the cable. For additional information and complete specifications, click the Data Sheet link below. Click Here for our Power Comparison Chart.