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SD System Signal SDS-50 Two Wire Irrigation Controller

PN: SDS-50
Original price $2,564.56 - Original price $2,564.56
Original price
$2,564.56 - $2,564.56
Current price $2,564.56

SD System Signal SDS-50 Two Wire Irrigation Controller

Designed and manufactured in Australia.

The SDS-Series irrigation controllers are built for reliability, efficiency, and workmanship. SDS-50 is the first model in a new range of high performance economically priced Two-Wire controllers. 

Controllers are supplied complete with plug-in power supply, two-wire device programming leads, lightning protection and PumpNode™ - App downloadable from Apple App Store and Google Play.

  • Powerful with intuitive programming, the SDS-Series controllers are flexible systems suitable for the complex requirements of both commercial landscape and agricultural applications.
  • Every SDS-Series controller is supplied complete with power supply, lightning protection module and PumpNode.
  • The economically priced SDS-Series controllers are uncompromising on quality and offers a capability not found on competing products many times their price.

SDS-50 Two-Wire Irrigation Controller 48 Station, 8 Program, 2 wire, Runs 4 valves simultaneously.

The SDS-50 is the first model in a new range of high performance economically priced Two-Wire controllers

The controller is designed for the most simplistic of programs up to complex requirements for both landscape and agriculture. The design makes servicing possible for the owner operator with easily accessible replacement plug-in electronic modules.

The SDS-50 controller has a capacity to operate 48 solenoid valves from a central location via a twisted pair cable. 12 programmable DataNodes™ facilitate the connection of sensors along the two-wire cable with an additional 6 controller direct inputs on the controller terminal. Up to two 24 direct relay output module can be connected at any location on the two-wire cable for conventional 24VAC solenoid operation. With the SDS-50 controller there is no need for valve decoders. Simply connect the cable direct to the SD Systems DataCoil™.

The SD-Systems, Bermad DataValves™ are supplied with DataCoils™ fitted. DataValves™ are available in sizes 25mm through to 150mm. Data radio, GSM, 3G, Bluetooth and internet communication options are supported to enable remote programming and monitoring from any location. Central PC software and an advanced Android App are available at no charge.

This economically priced model is not compromised on quality and offers a capability not normally found on competing products many times its price.


  • 48 Station, 48 DataValve™ (or DataCoil™) capacity.
  • Operates up to four valves at once, inclusive of a master valve.
  • No separate decoders – Decoders have been miniaturised and embedded within the coil (DataCoil™).
  • Optional RelayCube™ multi-wire converter.
  • 8 Independent programs.
  • 12 Programmable field DataNodes™ connect directly to the two-wire cable.
  • Moisture sensors (up to 8).
  • Water meters (up to 8).
  • Frost sensors (2 zones).
  • 7 Direct controller sensor inputs connect to the controller terminal strip.
  • Two-way communication every 3 seconds between all field devices and the controller.
  • Program watering settings in Time, Volume (litres) and Precipitation (mm).
  • 14 day calendar, 4 start times per program.
  • Loop program for propagation.
  • Run times in Hr : Min : Secs.
  • Exclusive HydroSector™ program for matched precipitation zones.
  • DataValves™ can be assigned to any station by keypad entry, SignalCloud.com software or SDS-LINK SmartPhone/Tablet Apps.
  • DataNodes™ can be assigned to any program.
  • PumpNodes connect to the two-wire cable to activate pump-start relays.
  • Auxiliary pump for chemical/fertigation program.
  • Individual pumps can be assigned for each program.
  • Option to assign a secondary boost pump to selected stations.
  • 2 independent Frost programs.
  • Water flow and system electrical current draw displayed.
  • Flow deviation with email alerts. Skips to next station, then shuts down program after third skip if the alert stays active.
  • Various programmable delays in programs to compensate for hydraulic anomalies. For example; slow closing valves, ramp-down of pumps and low or high pressure spikes.
  • Easy DIY repairs due to modular design of SDS plug-in boards.
  • Simple connectivity over SignalCloud. Control your irrigation over WiFi, 3G, 4G or Radio.
  • Supported by SignalCloud Web-Based Irrigation Central Control Software.
  • Free SDS-LINK Mobile App, available for download from the Apple App Store and Google Play.