Decoders

A technology long-since proven on top golf courses around the world, Rain Bird decoders provide "best-in-class" field control on centrally controlled irrigation systems.

Installed underground and featuring simple, low-cost wiring, decoders are an aesthetically pleasing, full-featured, economical option for reliable in-field control.

Features

Cost-Effective Alternative
A simple wiring configuration and absence of protective enclosures keeps installation and maintenance costs low. Rain Bird decoders are a “true lower than 30 volt” system that utilize a two-wire path of 14-gauge wire connecting the central control system, decoders and valves or valve-in-head sprinklers.
Sensor Capability
If you need information from analog, pulse or switch sensors to manage your irrigation, connect the sensor to the SD-210 sensor decoder and view the data at the central. Using Smart Sensor Software, sensor data can even be used to control the irrigation.
Protect Against the Elements
With all electronic components fully sealed within a water‑tight enclosure and buried underground, damage from floods, frost, rodents or vandals is virtually eliminated. Rain Bird decoders are an especially good choice for flood plains.
An Out-of-Sight Solution
Buried decoder systems leave nothing exposed to the elements. With no evidence of in-field control, this aesthetically pleasing alternative works perfectly in situations where controller enclosures are unwanted or impractical.
Excellent for Renovations
Thanks to advanced central control technology and simple wiring requirements, decoders are a smart choice for many golf course renovations. Use Rain Bird’s hybrid control feature to operate controllers and decoders concurrently. This makes it easy to expand irrigation coverage using a minimal amount of wire and decoders.
In-Field Control Options
The addition of decoders doesn’t mean the elimination of in‑field control. Decoders can be turned on and off in the field with The FREEDOM System or MI Series Mobile Controllers. 
The Right Amount of Control
Select different decoders to operate one, two, four or six solenoids. Five different decoders let you choose the amount of control you need.

Specs

Decoder addresses per LDI interface unit
500 maximum - Although the LDI can handle a maximum of 500 decoder addresses total. With any number over 380, the number of active decoders you will be able to operate simultaneously may be reduced.
Active solenoids per LDI (with 20 mA current draw each)
40 maximum
Active solenoids per two-wire path on LDI (with 20 mA current draw each)
20 maximum
Maximum allowable voltage drop per two-wire path
9 Volts
For LDI Lights
15 mA (total) - Although the LDI can supply 1,000 mA and 500 mA respectively, allow 50 mA of safety factor (design 950 mA with an LDI and 450 mA with an SDI)
For each inactive FD-101 or FD-102 decoder
0.5 mA each
For each inactive FD-401, FD-202 or FD-601 decoder
1.0 mA each
For each active Golf Black Solenoid (GBS25) coil
20 mA each
LSP-1 Installation
No more than 8 decoders between two LSP-1 surge arrestors or no more than 500 ft., whichever is less. LSP-1 ground grid resistance of 50 ohms or less is recommended.
Certifications
CE [European Union]

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