Neptune 1 Link module

The 1Link Module from Neptune Systems will hook up to any current Apex controller and allow control of the WAV pumps.
A single 1Link module can control up to 3 separate WAV pumps off a single outlet or two WAV pumps and 1 DOS pump,
saving outlets for other pieces of equipment.
If you use the 1Link and WAV pumps with Apex Fusion you can get access to many different flow modes to control one of the smartest pumps on the market today.

Compatible with Neptune DOS Fluid Metering System and Neptune WAV pumps.

The WAV is the first of a line of aquarium products from Neptune Systems that will use a completely new interface. While many in the aquarium world continue to embrace wireless technologies for interconnectivity, Neptune has decided to use a wire. 

So after much study of the problem, Neptune's answer is the 1LINK. It is called 1LINK because there is one power supply, one module (for up to three 1LINK devices), and a one-click-connection of a wire that carries not only the power for the device but two-way communication from it to your Apex.