Milesight EM500-SMT Soil Moisture Sensor
The Milesight EM500-SMT is designed for measuring soil moisture in harsh environments and transmitting data using LoRaWAN® technology. With this low power consumption technology, EM500-SMT can work up to 10 years with 19000 mAh battery. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor data remotely and visually.
Features
- High precision soil moisture measurement (0-100%)
- Built-in temperature sensor (-40°C to 80°C)
- Ultra-wide-distance transmission up to 10km line of sight
- IP67 waterproof enclosure for harsh environment applications
- Built-in 19000 mAh replaceable battery with up to 10 years battery life
- Store historical records locally (1,000 entries) with retransmission support
- NFC for easy configuration
- Compliant with standard LoRaWAN® gateways and network servers
- Threshold alarm and temperature change alarm capabilities
- Corrosion-resistant probe design
Applications
- Irrigation control
- Smart agriculture
- Greenhouse control
- Smart horticulture
- Golf course maintenance
Technical Specifications
LoRaWAN Connectivity
- Technology: LoRaWAN®, Milesight D2D
- Frequency: CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
- Tx Power: 16dBm (868MHz) / 20dBm (915MHz) / 19dBm (470MHz)
- Sensitivity: -137dBm @ 300bps
- Mode: OTAA/ABP
- Class: Class A
- Antenna: Internal
Measurements
Soil Moisture: - Range: 0% to 100% - Accuracy: ±2% (0-50%), ±3% (50-100%) - Resolution: 0.01%
Temperature: - Range: -40°C to 80°C - Accuracy: ±0.5°C - Resolution: 0.1°C
Power
- Battery: 1 × 19000 mAh ER34615 Li-SOCl2 replaceable battery
- Battery Life: Up to 10 years (10 min interval, 25°C, SF7&SF10 EU868)
Physical Characteristics
- Operating Temperature: -30°C to 70°C
- Relative Humidity: 0% to 100% (non-condensing)
- Ingress Protection: IP67 (Transceiver), IP68 (Soil Sensor)
- Cable Length: 2 m
- Weight: 328g (with battery and mounting bracket)
- Housing: ABS + PC, Grey (Transceiver) / Epoxy Resin + Stainless Steel, White + Silver (Soil Sensor)
- Dimensions: 69.5 × 71 × 105.4 mm
Configuration & Interfaces
- 1 × LED Indicator (Internal)
- 1 × Power/Reset Button (Internal)
- 1 × USB Type-C (Internal) for configuration and console
- NFC for mobile app configuration
- Power on/off via NFC or power button
Thinger.io Integration
The Milesight EM500-SMT integrates seamlessly with Thinger.io through LoRaWAN network servers, enabling remote monitoring and data management of soil moisture and temperature measurements.
Requirements
A LoRaWAN server is required to communicate the Milesight EM500-SMT into Thinger.io, some options are:
Alongside, the corresponding plugin for the selected LoRaWAN server needs to be installed in your Thinger.io instance.
Get Started
Installation
Look for the plugin in the Thinger.io Plugin Store and install it in your Thinger.io instance. Once the plugin is installed a new Product will be created for this device.
Configuration
The Product is already preconfigured, check that the auto provision prefix matches the one selected in your LoRaWAN server plugin in Thinger.io, or change it to your desire.
Usage
Start sending uplinks for autoprovisioning devices and buckets. This product also provides a predefined dashboard and downlinks.
Additional Resources
Milesight resources can be found at: