Will Modulink connect to your equipment?

For an RO skid, CIP process or pump installation, identify the instruments that produce pressure, flow, temperature or other readings. Indi receives supported electrical signals from those instruments; it does not measure each process variable without a suitable sensor. For a field zone, Agri connects supported soil sensors and compatible latching valves.

• Indi Wi-Fi: inputs, control and power
• Indi LoRa: inputs, control and power
• Agri: inputs, control and power

Have an existing PLC or SCADA system? Indi supports shunt-mode analog-input integration with existing systems, subject to wiring review. Do not assume that adding a terminal leaves every existing loop unaffected. Request the selected product’s wiring documentation and confirm the loop-power and reference arrangement.

Measurements

Two independently wired 4–20 mA input channels. Each channel supports inline current-loop or endpoint / ground-referenced wiring.

Control

One H-bridge motor/actuator interface with output-current sensing and programmable current-reference control. Confirm the actuator and load with engineering.

Power and connection

12–24 VDC line power and site Wi-Fi to the shared on-site Base Station.

Bring to the review

Instrument and actuator model numbers, loop wiring, existing PLC/SCADA connections, supply details and Wi-Fi coverage.

Measurements

Two independently wired passive 4–20 mA inputs and two ground-referenced 0–10 V inputs.

Control

One output selectable as a 4–20 mA current source or a 0–10 V voltage output; an external relay-driver interface. These interfaces require compatible external equipment.

Power and connection

Nominal 24 VDC line power and private LoRaWAN US915 to the shared on-site Base Station. The battery-powered Indi version is a future offering.

Bring to the review

Transmitter model numbers, loop-power arrangement, voltage references, output loads, site power and radio obstructions.

Measurements

Up to three Irrometer Watermark 200SS soil-water-tension sensors and a DS18B20 soil-temperature interface. Tension readings describe soil-water availability; they are not a universal volumetric-water-content or salinity measurement.

Control

Open/close pulses for compatible DC latching irrigation valves. Confirm the solenoid model and drive requirements; this is not a direct mains-powered pump starter.

Power and connection

Nominal 6 V from four C alkaline cells; conservative battery-life claim of over one year. Private LoRaWAN US915 to the shared on-site Base Station.

Bring to the review

Crop and zones, sensor depths and locations, valve/solenoid model, radio obstructions and maintenance access. Sensors, batteries and valves are separate accessories.

A terminal is one part of the installation. The shared Modulink Base Station runs the on-site software, dashboards and Skills, and stores received readings and application records at your site. Choose its location and verify Wi-Fi or LoRa coverage before commissioning.

Local operation does not require a vendor cloud or product phone-home. Off-site access still needs a secure network arrangement managed for your site. Weather feeds, external integrations, off-site notifications and remote support need their respective connections. Loss of internet is different from loss of terminal power or radio coverage: on-site storage does not establish that every missing reading can be recovered.

Platform interfaces include MQTT, REST and Prometheus, with Modbus TCP at the Base Station. This does not establish direct RS-485 or Modbus connectivity on every terminal, or compatibility with every third-party LoRaWAN gateway. Confirm the required integration.

Review access, backups and recovery responsibilities.

A valve command or motor-interface current is not independent proof of valve position, pump operation or water flow. If your decision requires measured flow or pressure, specify suitable instruments and confirm their Indi interfaces. Keep equipment protections and control requirements in the engineering review.

Use the RO/CIP monitoring guide for process records, or the irrigation guide for soil trends, compatible valves and Irrigation Intelligence. Modulink does not replace every treatment analyzer, PLC or farm control system.

Modulink Base Station

$1,000 USD each

Modulink Agri

$500 USD each

Modulink Indi LoRa

$500 USD each

Modulink Indi Wi-Fi

$500 USD each

Engineering assistance is $200 USD per hour. The general system estimate separates terminals, Base Station, Skills and engineering services. Sensors, power supplies, batteries, valves, external relays, mounting and installation materials must be scoped separately. Application Skills and installation assistance depend on the selected package and quote.

Build a general system estimate, or review the defined Indi LoRa and Agri pilot packages with their own inclusions, exclusions and renewal terms.

For a useful fit review, send the equipment model numbers, signal and wiring details, power, site layout, measurements and controls needed, and who will install and administer the system. Engineering must confirm electrical limits, radio coverage and integration scope; this guide supplies no unverified accuracy, load, range or enclosure rating.