Lesson19 - add water level sensor for automation in home assistant

[ARSHAD]

i have checked, there is no diagram, you can post at here.

I have attached a Diagram - Actually, i am looking for a water level monitor.

how about if i use single copper (Blue in Diagram) wire -- use it for GND in KC868-Server
Another - Single copper (Red in Diagram) wire - use it for Digital Input in KC868-Server 

directly put both the copper wire in Water Tank -  will LED - show on/off in HA dashboard ?

if it works - I will try to make the Relay ON/OFF of the water pump