Could anyone please add the Fritz 250 smartmeter reading head, available since March '25.
Using the AIN with the Fritz 200 thing, one could at last get the “accumulated energy consumption” reading. Works maybe also for “power” and “voltage” (couldn’t try myself). Missing “battery” and “batterylow”. Couldn’t verify if the “current”, “min. power” and “max power” values are calculated or sensor readings. There is maybe also a setting for the reading period, either 10 min or 60 min.
Thanks.
Update:
My Fritz Smart Energy 250 is attach to an ISKRA MT681 meter.
The MT681 has "accumulated energy consumption in kW/h and actual power in W as possible outputs. It had to be unlocked with a PIN (blink sequence with a flashlight) to provide extended readings.
My hack using the existing thing for the “Fritz 200 power socket” works. It is able to read both values, because it can decode the “powermeter” part of the Fritz API, the Fritz 250 uses also.
No luck with battery or batterylow so far. There ist a non-null value for voltage , but the MT681 has no voltage output.