Illustration: outdoor monitoring station with weather sensor, solar supply, enclosure and field probe.
See what changes in the root zone
Place sensors at representative depths and compare the soil readings with irrigation records. A single probe represents its installation point, so larger areas may need several points.
Compare planted areas outside the farm
Nurseries and landscape teams can follow conditions in planted beds. Soil type, probe contact, installation depth and seasonal maintenance need to be checked at each location.
Specifications & version options
Parameters
Soil moisture by FDR, soil temperature and EC by AC excitation
Moisture range
0–50% or 0–100%, selected when ordering
Moisture accuracy
±2% from 0–50%; ±3% from 51–100%
Moisture resolution
0.03% from 0–50%; 1% from 51–100%
Temperature measurement
-30 to +70 °C; ±0.5 °C; 0.1 °C resolution
EC range options
0–5000, 0–10000 or 0–20000 µS/cm
Show 8 more specification rows
EC performance
±3% FS; 0.01 mS/cm resolution
Output options
0-2 V, RS485 Modbus RTU or SDI-12; one selected when ordering
Supply
3.6–30 VDC; SDI-12 configuration 5–24 VDC
Current
6 mA at 12 VDC
RS485 default
Modbus RTU, 9600 baud, 8N1, address 0x01
Construction
ABS body; three 316L rods, Ø3 × 70 mm; 45 × 15 × 145 mm
Installation
Surface insertion or buried installation
Environment
-40 to +80 °C operating; IP68; epoxy sealed
Need to connect this equipment to an existing controller or platform?
Share your current model, a photo or the connection you need. We help assess interfaces, power and the required configuration.
Public documents describe this product family and selection options. Wiring, register maps and compliance documents must match the model and version selected for your order.
Customer platform or an agreed third-party service
How the model is selected
Check the installation, electrical interfaces and documents before choosing the model.
Site requirement
Application, medium, mounting and environment
Hardware configuration
Signal, protocol, power and enclosure
Your quotation
Model, quantity, certificates and delivery
Connecting field equipment
Illustration: remote-monitoring integration with field enclosure, gateway, power and industrial equipment.
Select the output and install the rods without disturbing the soil contact
Range, wiring and installation method affect whether readings can be compared over time.
Choose a 0-50% or 0-100% moisture range and a 0-5000, 0-10000 or 0-20000 µS/cm EC range before release.
Choose one output: 0-2 V, RS485 Modbus RTU or SDI-12. These are ordered alternatives, not simultaneous standard outputs.
The measurement-temperature range is -30 to +70 °C. The separate -40 to +80 °C value is the operating-environment limit.
Show 4 more selection notes
For surface insertion, push the rods vertically into undisturbed soil. For buried installation, press them horizontally into a prepared pit wall.
Keep the three rods in close soil contact, avoid stones and do not rock the probe after insertion. The effective sensing area is approximately a 70 mm diameter by 70 mm high cylinder around the rods.
IP68 and epoxy sealing protect the probe, but cable joints, lightning protection and the upstream enclosure still require site-specific protection.
Compare EC readings only under a documented soil type, moisture condition and field procedure. Use a laboratory method when a certified salinity result is required.
Continue product selection
Compare adjacent hardware families for the same monitoring path.
Define the root-zone depths and number of sensing points that affect irrigation or crop decisions; one point rarely represents a whole field.
Select a 0-50% or 0-100% moisture range and a 0-5000, 0-10000 or 0-20000 µS/cm EC range.
Choose one output: 0-2 V, RS485 Modbus RTU or SDI-12. Match its supply, cable and receiving logger or RTU.
Install the three rods in close contact with undisturbed soil, avoid stones and do not rock the probe after insertion.
Show 2 more selection checks
Record soil type, depth, orientation, moisture condition and comparison method so EC and moisture trends remain interpretable.
Use the field EC signal for controlled trends and comparisons. Do not present it as a laboratory soil-salinity result without the corresponding method.
Compatible with
RS485 Modbus RTU masters using the model-specific register map and selected device address
SDI-12 data loggers using the matching ordered interface
0-2 V analog inputs with a compatible supply and common signal ground
Irrigation, greenhouse and environmental data loggers sized for the cable run and sampling interval
Typical package
Three-rod soil probe with the selected moisture range, EC range and output
Field cable length and junction protection confirmed for the installation
Compatible logger, RTU or protocol gateway with the required input
Power, surge and enclosure items selected for the site
Installation and comparison-reading plan for the soil type and sensing depth
Applications
Sensor set, mast, solar supply, enclosure and probe placement are selected for the crop and site.
This three-rod probe measures soil moisture, soil temperature and an in-situ electrical-conductivity signal at one sensing point. Moisture uses the FDR method and EC uses AC excitation. Select one moisture range, one EC range and one output before quotation. The field EC reading is useful for trends and comparisons under a defined soil and moisture condition; it is not, by itself, a laboratory soil-salinity result.
Irrigation scheduling based on moisture trends at defined root-zone depths
Greenhouse, orchard and field trials that compare multiple sensing points
Seasonal soil moisture, temperature and EC trend monitoring
Buried monitoring installations with a planned inspection and comparison-reading procedure
Which output should be selected for this soil sensor?
Use RS485 Modbus RTU for a digital multi-drop field bus, SDI-12 for a compatible environmental logger, or 0-2 V for a short analog signal path. Only one output is selected for the ordered configuration.
What are the measurement and operating temperature ranges?
The soil-temperature measurement range is -30 to +70 °C with ±0.5 °C accuracy and 0.1 °C resolution. The separate -40 to +80 °C value describes the operating environment, not the measurement range.
How should the three rods be installed?
Insert them into undisturbed soil with close contact on all sides, avoid stones and do not rock the probe. Use vertical insertion from the surface or horizontal insertion into a prepared pit wall, then document depth and orientation for repeatable comparisons.
Can the EC reading be used as a laboratory soil-salinity result?
No. It is an in-situ conductivity signal that changes with soil type, moisture, temperature and installation. It supports field trends and comparisons when the method is controlled; certified salinity results require the appropriate laboratory procedure.
How is this sensor connected to a remote monitoring system?
Connect the selected sensor output to a compatible logger or RTU, then use the RTU or gateway for 4G, Ethernet or another uplink. The register map, device address, analog scaling, cable, power and reporting interval are checked as one signal chain.
What should I provide when requesting a quote for the Soil Moisture, Temperature & EC Sensor?
Root-zone depths, number and layout of sensing points; Soil type, expected moisture range and EC comparison objective; Selected moisture range, EC range and 0-2 V / RS485 / SDI-12 output; Logger or RTU input, device addressing, sampling interval, cable length and supply
Where can I compare available model options?
Open the Application selection guide linked on this page. Use it to compare equipment options before requesting a configuration.
Will it work with my existing system?
Check the field signal, supply, protocol and receiving platform against the selected model. The connection options listed on this page are a starting point; send your equipment model or interface document so we can check the combination before ordering.
Product-family reference. Final ordered model and specifications are confirmed in the written quotation.
