Firmware
Solar Monitor 2 - all models
Firmware 1.0.03 - To be used only for SM2-MU units with firmware revision <= 1.0.03.Release NotesFirmware 2.1.2 build 41 - To be used only for SM2-MU units with firmware revision 1.0.04 and higher.(not recommended, only for test cases)Firmware 2.2.0 build 55 - Modbus Sunspec M2M functionality (first version,.not recommended, only for test cases)Firmware 2.2.3 build 71 - For more details and beta versions see https://www.solarmonitor.cz/download/public/firmware/