The standard PoE switch distance limit is 100 meters, as defined by Ethernet transmission properties. When the transmission distance exceeds 100 meters, data delay, packet loss, etc. Because the farther the distance, the greater the resistance, the higher the requirements. In PoE (Power over Ethernet) technology, the Ethernet link between the Power Sourcing Equipment (PSE) and the Powered Device (PD) has a clearly defined maximum distance limitβ100 meters (328 feet). The pair 1-2 act as the positive polarity, while the pair 3-6 act as the negative polarity.
[PDF Version]