Soil Moisture, Temperature,
and Electrical Conductivity Sensor

Accurate, Reliable, and Real-Time Soil Conditions Monitoring

1 em500 smtc 1 small
1 em500 smtc 2 small
1 em500 smtc 3 small
  • Seamless Integration with Smart Irrigation Systems
  • IP67 Rated Transceiver for Harsh Environment
  • IP68 Rated Corrosion Resistance Probe
  • Data Integrity and Easy Management
  • Long-Lasting Battery Life of up to 10 Years
  • Easy Configuration via NFC

Meet the Robust EM500 Series Outdoor LoRaWAN® Sensor


Soil Conditions Monitoring
with Research-Grade Accuracy

Engineered to deliver high-precision measurements of soil moisture, temperature and electrical conductivity, it empowers you with valuable sensing insights for optimized agricultural practices.

Ultra-Rugged Enclosure
for Harsh Environment

This device is designed to withstand even the most demanding environments. With its shock resistance, vibration resistance, IP67 transceiver, and IP68 corrosion resistance probe, EM500-SMTC can function properly even in highly corrosive soils, ensuring reliable performance and durability.

Typical Applications

Smart Irrigation

When the EM500-SMTC detects insufficient soil moisture, the UC51x controller effortlessly implements the predefined irrigation plan, enabling automated irrigation based on precise timing and water volume. This seamless integration guarantees an irrigation system that operates smoothly and efficiently.


  • Accurate and timely watering
  • Save time, money, and water resources
  • Data insights and analysis
5 agriculture kit

Smart Agriculture Kit

Remote Monitoring and Control

Seamlessly integrating cutting-edge hardware and advanced software, this kit offers unparalleled IoT connectivity. Gain instant access to valuable data insights, advanced analytics, and immersive visualization tools that will revolutionize your farming practices.

Get More Details

Ultra Low Power Consumption

The EM500-SMTC is equipped with high-capacity and easily-replaceable batteries.
This facilitates the installation and maintenance process and reduces wiring costs.

LoRaWAN® Based

  • Penetrating Signals: data transmission range up to 2 km in urban areas and
    15 km in rural areas
  • High Compatibility: compliant with standard LoRaWAN® gateways and network servers

Store Capacity with 1,000 Sets
of Historical Data Records

Data can be stored in the device and cannot be manually deleted, further securing the traceability of the reported information.

Support Retransmission
for Reliable Communication

With support for data retransmission, the device guarantees that the web server gets all the data even if the network is down occasionally.

Cloud Data Management
Milesight IoT Cloud

  • Data Visualization Dashboard:
    All figures in a glance
  • Automatic Triggers:
    Interactive collaboration with Milesight IoT sensors
    to realize scene-based automation
  • Regular Reports & Real-Time Alerts:
    Data-based insights
  • Android & iOS App:
    Manage devices at your fingertips

NFC Configuration

Switching On/Off & Configuring the Devices Wirelessly

11 nfc configuration 1

1st Step

Install the
Milesight ToolBox

11 nfc configuration 2

2nd Step

Enable NFC and run ToolBox,
then attach your phone to the device

11 nfc configuration 3

3rd Step

Verify the password
and start configuring

Explore More About NFC Configuration >>


14 wall mounting 14 pole mounting 14 din

Wall Mounting

Pole Mounting

DIN Rail Mounting


Wireless Transmission
Tx Power16dBm(868)/20dBm(915)/19dBm(470)
Sensitivity-137dBm @300bps
ModeOTAA/ABP Class A
Range0% ~ 100% RH
Accuracy±2%(0~50%), ±3%(50%~100%)
Range-40°C ~ 80°C
Range0~20000 µs/cm
Accuracy±3%(0~10000 µs/cm), ±5%(10000~20000 µs/cm)
Resolution1 µs/cm
Power On & OffNFC, Power Button (Internal)
ConfigurationMobile App(via NFC) or PC Software(via USB Type-C)
Physical Characteristics
Cable Length2 m
Power Supply19000 mAh Li-SOCL2 battery (ER34615)
Battery Life*10 years (10 min interval)
Operating Temperature-30°C to +70°C
Relative Humidity0% to 100% (non-condensing)
Ingress ProtectionIP67 (Transceiver)/IP68(Soil Sensor)
DimensionTransceiver: 105.4 × 71 × 69.5 mm (4.1 × 2.8 × 2.7 in)
Soil Sensor: 88 × 68 × 26 mm (3.5 × 2.7 × 1.0 in)
(Probe length: 50mm/1.97 in)
InstallationPole, wall or DIN Rail Mounting
RegulatoryCE, FCC, RoHS

* Tested under laboratory conditions and for guideline purposes only.


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