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Want to add PoE to your Arduino Ethernet? The Ag9120-S is a module designed to extract power from a conventional twisted pair Category 5 Ethernet cable, and conform to the IEEE 802.3af Power-over-Ethernet (PoE) standard.
The Ag9120-S provides the PoE compatibility signature and power classification required by the Power Sourcing Equipment (PSE) before applying up to 15W power to the port.
The high efficiency DC/DC converter operates over a wide input voltage range (36V to 48V typ), provides a regulated low ripple, and low noise 12V output. The DC/DC converter also has built-in overload and short-circuit output protection.