If, I have written to them an e-mail but I wanted to speak with people who uses these devices. I do not find any users' commentary in Internet. I seems to me to be strange because seemingly it´s good enough.
My problem is that the relay does not connect. Of no form. It indicates the dampness but it does not do the function of higrostat.
I wait for Forttex's response but if someone uses them I would be grateful to speak with him.