Abstract: The present embodiments provide methods, systems and apparatuses for use in implementing and/or controlling irrigation through communication over a two-wire interface. Some method of controlling irrigation over a two-wire interface define a reference voltage at a first voltage level, receive an AC voltage input signal, detect a synchronization identifier encoded on the signal relative to the reference voltage at the first level, define the reference voltage at a second voltage level, identify a first data bit of a communication to coordinating irrigation encoded on the signal following the synchronization identifier.