What is the function of a decoder in a two-wire system?

In a two-wire irrigation system, the function of a decoder is crucial as it converts the control signals sent along the two-wire path into distinct signals that can operate individual valves. This allows for precise management of the irrigation system.

With traditional systems, each valve would require its own wire run back to the controller, which can be inefficient and costly in terms of installation and maintenance. The decoder simplifies this by allowing multiple valves to be controlled with just two wires. When a control signal reaches a decoder, it decodes the information and activates the corresponding valve that it is assigned to. This is an essential component for the functionality of modern irrigation systems, as it enhances both the efficiency and flexibility of irrigation management.