Alfa 48VDC to 24V Passive PoE Converter with Redundant Dual Input for Outdoor AP/CPE

The DDC-4824POE is a telecom-oriented PoE adapter that converts ±48 V DC input to 24 V DC Passive PoE for compatible outdoor AP/CPE devices. It accepts power through either a DC jack or terminal block, creating a redundant dual-input arrangement that can maintain the power path if one source drops. The supported input tolerance is ±36 to ±58 V DC, while the PoE output is 24 V DC ±10% with up to 0.7 A output current. Power is delivered over pins 4/5 (+) and 7/8 (-), allowing the adapter to supply compatible 24 V Passive PoE equipment through the same Ethernet connection used for network access. Reverse-polarity protection is also included for the power input.

For network connectivity, the DDC-4824POE supports 10/100/1000 Mbps Gigabit Ethernet and provides one RJ45 data input together with one RJ45 data-and-power output. Separate LEDs indicate input and output power status, helping users check the adapter’s operating state directly. The enclosure can be positioned vertically or horizontally, giving additional flexibility when installing it alongside telecom or network equipment. The device operates from -10 to 50 °C and can be stored from -20 to 60 °C. Its compact 102.5 × 47.5 × 27 mm dimensions make it suitable for installations where a 48 V DC power environment must be adapted for 24 V Passive PoE devices without replacing the existing power infrastructure.