Update README.md
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@ -8,8 +8,9 @@ In this case it is about connecting a Gree Versati III 10kw heat pump.
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## Info:
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-use only shielded cable, otherwise the error "Modbus CRC Check Failed!" may appear in the log.
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-put a 120 ohm resistor after the last connected device
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-modbus datasheet: [Gree Versati III]([https://www.laskakit.cz/prevodnik-ttl-na-rs-485--max485/](https://github.com/peca2345/ESPHome-modbus-heatpump-Gree-Versati-III/blob/main/modbus-versati-iii-en.pdf))
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## Components:
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- ESP8266 / ESP32
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