Diagram for capacitive sensor with relay module

Diagram of connection of the capacitive sensor, for the autolevel function, with an relay module.

I drew this diagram, because an Internet friend, has this module, common in Arduino projects or as controller of a 220V silicone hotbed.

It is not the best solution, because it is noisy. But possibly, you have one, surplus, of an arduino project.

Is a remix from my own work, just in case, you have a relay module.

UPDATE 06/16/2018: Remember that you should not take literally the final po