Temperature and Humidity Sensor

EM320-TH: A Huge Leap for Trustworthy and Holistic Solutions

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  • Food-safe and IP67 Rated Enclosure
  • Data Storage and Retransmission
  • Magnetic/Standard Versions for Versatile Applications
  • Optimized Accuracy and Resolution with the Best Price Competitiveness
  • Certified for EN12830 Standard

Slimmer, Superior and Safer

EM320-TH is a LoRaWAN®-based device for precise temperature and humidity monitoring. With its accurate sensors and seamless integration, it enables remote environmental monitoring in applications such as smart cold chain, smart building and etc.


Esthetic and Practical Design

Robust IP67 Rated Enclosure

EM320-TH is equipped with IP67 rated enclosure which enables it to function properly even in the most demanding environments.

Certified for Cold Chain 

Traceability EN12830 Standard 

temperature humidity sensor certified en12830


Food Contact Materials

With FDA-approved food contact materials, EM320-TH eliminates any potential health concerns and provides proven safety when it comes into contact with the food.
temperature humidity sensor certified fda

Sensitive and Accurate

High precision sensibility for subtle changes monitoring

  • Sensirion SHT 41
  • Wide Measuring Range: -30℃-60℃; 0%-100% RH (Relative Humidity)
  • High Resolution: 0.1℃; 0.5% RH
  • Optimized Accuracy: ±0.2℃, ±2%RH

Data Storage and Retransmission

EM320-TH has been upgraded with data storage and retransmission. EM320-TH can store up to 3000 sets of historical data records with time stamps. When the connection fails, EM320-TH will continue to collect and store environment data. Once reconnected, the data collected during that period will be retransmitted to the gateway, thus avoiding data loss. This feature is appropriate for applications that lay emphasis on information and data integrity.

Versatile Applications

Magnetic Version

  • Smart Cold Chain
  • Smart Refrigeratory
  • Smart Pharmacy

Standard Version

  • Smart Agriculture
  • Smart Building
  • Smart Factory
cold chain

With the feature of easy installation, and the ability to store data when the network fails, EM320-TH Magnetic version is suitable for Cold Chain which requires constant monitoring and data tracking. Food-grade enclosure provides double guarantee when comes into contact with the cargo such as food, beverage and pharmaceuticals.

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EM320-TH greatly facilitates temperature and humidity monitoring for refrigerators since the magnetic version can easily be attached to the freezer. EM320-TH sensor helps ensure the optimal storage conditions to prevent quantitative and qualitative food losses.


Pharmaceutical storage requires precise environment control as well as environment monitoring. Magnetic mounting, high-precision sensor and food-grade materials make EM320-TH the perfect choice for pharmacy environment monitoring.

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Monitor temperature and humidity in the greenhouse, and collect accurate and real time data to adjust irrigation and ventilation systems accordingly, thus maintaining the optimum environment for crops.


Monitor indoor temperature and humidity in buildings such as apartments, offices and schools, and connect with heating, ventilation and air conditioning systems to optimize energy usage.


Monitor temperature and humidity in the harsh environments in factories or scenarios that demand precise data such as IT server room to prevent rust or fungus damage.

Ultra-Low Power Consumption

Built-in 2 × 2700 mAh ER14505 Li-SOCL2 replaceable batteries ensure more than 5 years service life in low temperature environments.

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

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

nfc 1

1st Step

Install the
Milesight ToolBox

nfc 2

2nd Step

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

nfc 3

3rd Step

Verify the password
and start configuring

Explore More About NFC Configuration >>



Wall Mounting

magnetic adsorption

Magnetic Adsorption


Wireless Transmission
Tx Power16dBm (868)/20dBm(915)/19dBm(470)
Sensitivity-137dBm @300bps
ModeOTAA/ABP Class A
Range-30°C to + 60°C
Accuracy+/- 0.2°C
Range0% to 100% RH
Accuracy+/- 2%
Resolution0.5% RH
Power On & OffNFC Configuration via Mobile App, Power Button (Internal)
ConfigurationNFC Configuration via Mobile App
Physical Characteristics
Power Supply2 × 2700 mAh ER14505 Li-SOCL2 Batteries
Battery Life*≥5 years (10 min interval with data retransmission disabled)
Operating Temperature-30°C to +60°C
Relative Humidity≤95%
MaterialPC + ABS (Food-Grade)
Ingress ProtectionIP67
Dimension85 × 58 × 18 mm (3.34 × 2.28 × 0.70 in)
InstallationStandard Version: Wall Mounting
Magnet Version: Magnetic Adsorption


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