Preferred router settings June 30, 2025 12:45 Updated For the dongle to work properly, the following ports must be open in your router: SNTP: time server 123 TLS azure connection: 8883 Modbus (local): 502 Related to Energy manager @home Related articles Installation guide Requirements for correct functioning of the dongle My home network is not displayed in the list Which devices are compatible with the Energy manager? I am interested in the Energy Manager Home