In this case, we have no native Sensor. When d-link has an own API, you can check whether you can query the information from this API and then show the result in a HTTP custom Sensor. If no API is available, you can check via which protocol the information is available and e.g use a SNMP Custom Sensor to receive the information. Another option would be to use a script which is then executed via a EXE/Script Sensor: https://www.paessler.com/manuals/prtg/custom_sensors
Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.