HILINK hlk-rm04 wifi uart wifi module + arduino nano

Hi there i just bought a Hilink hlk-rm04 module, that its supposed to give wifi connectivity to arduinos. The thing is that i can't find proper documentation that explains how to use it with an Arduino Nano V3. I would like to be able to control a 5v relay module via wifi, can somebody find some documentation or tutorials for this?

Thanks

Juan