Get started with Hydros or expand your existing system with this X3, PH probe, temp sensor, and Hydros wifi compatible power strip! A lot of additional features in an affordable package for your hydros system. This Hydros X3 includes the power cable and command bus cable to connect it to other Hydros devices. I have several other Hydros controllers and products listed for sale as well as lots of add ons such as ORP, PH, and Temp sensor​/​probes, water leak detectors, etc. PM me for a custom package and price!!