How to connect PZEM004T AC Sensor in KC868 series products?

[admin]

PZEM004T use RS485 modbus protocol, if you can write arduino code, you can read it. is you don't want to write code. i suggest you add PZEM004T RS485 to raspberry pi's USB->RS485 adapter directly. so that you can config RS485 modbus PZEM004T in home assistant. if you add a KC868-Server, it inside have raspberry Pi CM4 module and have RS485 interface, you can connect to your PZEM004T directly.