I am curious if this relay board can be controlled over the internet with either web-I or N-button lite. I have tried to reach the relay board but have not been able to. Is this lantronix relay board able to be controlled via web. If it is can you link the best tutorial to accomplish this. Attached is a link to a picture of the board.
That appears to be the receiver board for an MCNET mirror pair(product page here):
It cannot be manually controlled. It is intended to be controlled by inputs on the mating board. What you are looking for would require different firmware in both the relay controller and the Lantronix Module.