Proving that extra smart can also be extra simple. The popular Rain Bird ESP Series of controllers has been expanded to provide a contractor grade irrigation controller for residential and light commercial applications. The ESP-RZX Controller was designed with ease of use in mind. Zone-based scheduling allows every valve to be scheduled independently; no more explaining programs to end users, virtually eliminating call-backs. The large LCD screen shows all of the programming for each zone at the same time. Simple graphic based user interface is easy to explain and presents every controller feature at your fingertips.