LEITLINK® Central Control System

LEITLINK® 4GF with Cloud-Based Communication

DIG’s LEITLINK® 4GF is a solar-powered, cloud-based water management controller designed for flexible and efficient irrigation monitoring. With no hardware or software to install and no office lines to run, LEITLINK® provides streamlined communication, enhanced capability, and full control—right from your browser.

One year of LEITLINK® cloud service is included. After the initial service period, subscriptions can be renewed through www.leitlink.com.

Easy Setup & Management

Creating an account at www.leitlink.com is quick and simple. Once installed, each controller links directly to your site account, appearing on an interactive map where you can assign names, locations, and groups. Manage one or multiple controllers, either from the onboard display or remotely through the site.

Flexible Programming & Conservation

LEITLINK® 4GF uses secure 4G connectivity and MQTT protocol for reliable updates. Users can set programs, adjust flow and ET, review reports, update settings, and even perform manual runs. With weather-based programming and sensor integration, the system helps maximize water conservation while maintaining optimal performance.

LEITLINK FS Standalone Controller

The LEITLINK® can also be operated as a standalone controller without wireless access and central control features. Designed for installations where remote connectivity is unnecessary and powered by ambient light (solar), it provides advanced irrigation management with available flow monitoring for systems from 0 to 32 stations, delivering reliable, water-efficient operation wherever standalone control is preferred.

Features:

• Advanced Solar-Powered Control – Operates without AC power, batteries, or conventional solar panels using ambient light.
• Cloud-Based Connectivity – 4G MQTTS protocol for secure, real-time communication via DIG® LEITLINK website.
• Central Control System – Manage, program, and view reports on any number of LEITLINK 4GF devices through the www.leitlink.com website.
• Scalable Design – Supports up to 32 stations, five common wires, two master valves, two fertilizer injectors, and up to six monitoring sensors per zone, per controller, and any number of LEITLINK 4GF controllers.
• Standalone Capabilities – Available as the LEITLINK FS if standalone control is preferred.
• Built-In GPS – Provides controller visibility and location mapping directly through the online platform or app.
• Flexible Programming – Four programs with 7-day calendar, interval (1–99 days), odd/even days, and up to 8 start times per program. Station runtimes up to 23h 59m in 1-minute increments.
• Weather-Based Scheduling – Adjusts irrigation automatically using location-based weather data and SWAT protocol.
• Customizable Manual Runs – Allows for temporary programs, stored manual runs, and valve testing.
• Sensor Integration – Compatible with flow, temperature, moisture, ET, rain, and freeze sensors (up to six per valve).
• Real-Time Alerts – Sends email/text notifications when sensor thresholds are reached; all alerts can be overridden by the user.
• Reporting & History – Tracks water usage, fertilizer use, run history, and savings; accessible online, via app, or from the controller.
• Patented Sensor Technology – Sensors connect directly through the solenoid actuator circuit, with easy add-on capability.
• Secure Access – Six-character password protection on the controller plus account-based multi-user access with permissions.
• Durable Construction – Heavy-duty, vandal-resistant polycarbonate housing; waterproof and weather-resistant (-10°C to 60°C).
• Lightning Protection – Isolated design protects electronics from ground currents and nearby strikes.
• LEITLINK Key – Rechargeable external power source for display activation and capacitor charging.
• Versatility – Compatible with LEMA 1700S solenoid actuators and adapters for most major valve brands.
• Fertilizer Integration – Two ports for proportional liquid fertilizer or cleaner injection, controllable by programming.