Signal SD-LB Plug-In Controller Logic Boards

The Signal SD-LB Plug-In Controller Logic Boards are essential replacement modules for the SDS Series Two-Wire Irrigation Controllers, allowing fast and easy servicing of SDS-50, SDS-75, and SDS-100 units. These boards form the logic and communication core of the controller, managing program execution, two-wire communication, and system operations.

Each SDS controller is built with a modular architecture that includes a motherboard, plug-in logic board, output module, and keypad. Thanks to this modular design, DIY servicing is quick and cost-effective—simply identify the faulty board using the built-in LED status indicators, and replace it without needing to return the entire controller.

Whether replacing a damaged board or keeping a spare on hand for critical systems, Signal’s logic boards restore controller function with minimal downtime. All boards are compatible with their respective SDS controller model.

FEATURES

• Genuine replacement logic board for SDS Series controllers
• Modular plug-in design for fast, DIY servicing
• Integrated LED indicators for fault diagnosis
• Maintains full compatibility with SDS SignalCloud and SDS-LINK app
• Compatible with original SDS controller housings and power systems
• Built for long-term durability in commercial and agricultural installations

APPLICATIONS

• Replacement for faulty or damaged SDS logic boards
• On-site repairs and field service stocking
• Preventative maintenance spares for SDS-50, SDS-75, and SDS-100
• Compatible with two-wire SDS irrigation systems in landscape or agriculture

MODELS

• SD-50-LB: Replacement logic board for SDS-50 (48-station controller)
• SD-75-LB: Replacement logic board for SDS-75 (72-station controller)
• SD-100-LB: Replacement logic board for SDS-100 (96-station controller)