Lesson19 - add water level sensor for automation in home assistant

[ARSHAD]

i don't know the principle and output signal type. do you have some usage case about the water level sensor? or how to use it , whether have diagram?

In the below link - you can find the diagram and the usage case -

Microtail Fully Automatic Water Level Controller with Dry Run Protection : Amazon.in: Garden & Outdoors

so i want to use these sensors with KC868 sever to ON/OFF relay of water pump