Custom Measurands for RSSI values

Easee chargers support 3 different RSSI values to assist customers in debugging common connectivity issues.

• RSSI.MobileThe signal strength to the cellular data network as measured by the charger
• RSSI.WiFiThe signal strength for the configured WiFi network
• RSSI.RadioThe signal strength for the internal radio used for master/slave communication

In addition an additional UnitOfMeasure is defined ‘RSSI’ to send unambigious data.

If the measurands are defined and sent to a central system with no concept of the additional measurands and unit, it is likely to respond with a FormationValidation message for all ‘MeterValues’ calls and potentially TransactionStop messages containing the custom measurands.