Is HM-600 with serial number 11419xxx ready for openDTU

[thomas2603]

Hello, I already have a Hoymiles HM-600 with the above mentioned serial number. Is this inverter compatible to openDTU or is it too old?
In the inverter overview https://www.opendtu.solar/hardware/inverter_overview/ I could find the serial number prefix 1141 but the inverter is named HM-600-2T
Thanks for answering my question in advance....

[Solarteur]

I have an HM-600 (1141xxx) in operation - it works perfectly with OpenDTU.

[thomas2603]

Hi Solarteur, thanks for this very fast answer.
As far as I understood, the xxx19xxx in my serial number means, that the production date from my HM600 is 2019. For such old inverters the RF-module must be CC2530 and not the mentioned NRF24L01+ from the inverter overview. Additionally I should use an older version of openDTU.
What is the age of your inverter and which RF-module and openDTU version did you use?

[Solarteur]

I have three HM inverters in operation:
2 HM-600, manufactured in 2022, both serial number 11418xxx
1 HM-800, manufactured in 2023, serial number 11419xxx
This shows that my inverter was manufactured with the xxx19xxx serial number 2023 (the data was read using OpenDTU-(OnBattery)).
I am using the nRF24L01+ module together with OpenDTU-OnBattery, released on April 17, 2025. OpenDTU-OnBattery is a fork of OpenDTU, which adds support for battery chargers, battery management systems (BMS), and power meters on a single ESP32.

[thomas2603]

THX
May be my information is wrong. I'll try with nRF24L01+