EZO sensor not working

[TeRRia]

i see now. this is not a i2c sensor, just a serial port sensor. so you can't connect with i2c extender.
the sensor have private protocol, so you can't integrate to home assistant directly.

Yes you can.

Please read this link:
EZO sensor circuits — ESPHome


This is an i2c sensor (or UART, as mentioned in previous message it works with both protocols).


So it's well integrated with Home Assistant and ESPHome.