EPS V4 12x InterfaceA crucial part of the EPS system, transferring data instantly and accurately to the rear and front derailleurs for reliable shifting faster than mechanical groupsets.The V4 version not only receives the electronic impulses and sends them to the front and rear derailleurs; thanks to its two internal aerials, with both Bluetooth Low Energy and ANT +, it can also communicate in real time with a vast range of external devices, ranging from phones to bike computers, through to any other electronic device used by the cyclist.The V4 version also enables automatic shifting once a set gear inch ratio has been reached following the gear change. The option can be selected from the "MyEPS" session in the MyCampy App.**Features and benefits*** DTI (Digital Tech Intelligence): Enclosed and protected in the Power Unit and interface, "Digital Tech Intelligence" transmits, receives and processes data thousands of times a second and transmits the corresponding signal instantly, accurately and reliably to the rear and front derailleur.* On Board Diagnostics: The EPS system is capable of automatically detecting a whole range of malfunctions. Various colours will show depending on the fault* Waterproof: The Campagnolo EPS electronic drivetrain complies with IP67 international standards. This means that the system is able to protect its electronic components from dust and liquid infiltration.