Based on this product's specifications, here are some alternatives and similar models
Power Adapter No name POE-UNI-B for PoE over twisted-pair (POE-UNI-B)
Summary description:
Power adapter No name POE-UNI-B provides power delivery for devices using Power over Ethernet over twisted-pair cabling. Intended to inject or extract DC power via Ethernet cabling for compatible network equipment. Useful for IP cameras, access points and other low-voltage network devices where PoE power injection or conversion is required.