DAIKIN Altherma M HW
DAIKIN Altherma M HW 200 EKHHE200PCV37 / FERROLI - EGEA TECH LT
https://www.daikin.eu/en_us/products/product.html/EKHHE-PCV37.html
https://www.ferroli.com/media/3540000410_03_EGEA_TECH_200%20LT%20-%20260%20LT%20-%20200%20LT-S%20-%20260%20LT-S.pdf
RS485 module with ESP32
https://de.aliexpress.com/item/1005009583388691.html - TTL Turn RS485 485 to Serial UART Level Mutual Conversion Hardware Automatic Flow Control Board Module XY-017
https://github.com/lorbetzki/Daikin-EKHHE
https://github.com/jcappaert/esphome-daikin-ekhhe
https://www.bizkit.ru/en/2019/02/21/12563/
https://how2electronics.com/how-to-use-modbus-rtu-with-esp32-to-read-sensor-data/