OpenSprinkler › Forums › OpenSprinkler Unified Firmware › COntrol via bluetooth? Cell? › Re: Re: COntrol via bluetooth? Cell? May 1, 2014 at 3:19 pm #26680 RayKeymaster Can you install a cheap router there? It doesn’t need to have Internet connection at all, it’s just to create a local network that both opensprinkler and your phone can connect to.