ESP-LXD 2-Wire Decoder Control System Installation & Troubleshooting Guide
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2-Wire Decoder System Overview
A Rain Bird ESP-LXD 2-Wire Decoder Control System provides modular control of small to large
irrigation systems. Unlike traditionally-wired controllers that power the valve solenoids directly
through individual valve wires, a 2-wire decoder controller uses a 2-wire cable to interconnect
decoders that in turn control the valve solenoids.
An ESP-LXD controller is programmed similar to a traditional-wired controller. The difference
is factory assigned decoder addresses are assigned to stations, master valves, and sensors. As
irrigation programs execute, the controller sends commands via the 2-wire path cable to the
decoders located at each valve and sensor. The decoders directly activate the solenoids on the
valves and monitor the sensors.
Typical 2-Wire Decoder to Valve Connections
