EM320-TH Temperature and Humidity Sensor

Temperature and Humidity Sensor

Temperature and Humidity Sensor 

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

  • 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


The need for temperature and humidity monitoring never decreases. Widespread but essential, the temperature and humidity sensor serves applications across industries. Milesight introduces LoRaWAN® EM320-TH Temperature and Humidity Sensor to offer you the best price-performance ratio. Two optional versions can unleash the potential of EM320-TH sensor to the maximum.

*EM320-TH Magnetic Version will be available at November

Slimmer, Superior and Safer

Esthetic and Practical Design

 Temperature and Humidity Sensor

Robust IP67 Rated Enclosure
Temperature and Humidity SensorEM320-TH is equipped with IP67 rated enclosure which enables it to function properly even in the most demanding environments.

Temperature and Humidity Sensor

FDA-approved Food Contact Materials

FDA-approved Food Contact Materials

Sensitive and Accurate

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.
Data Storage and Retransmission

Versatile Applications

* Time Saving   * Cost-effective    * Efficient    * Low Maintenance 

Magnetic Version

  • Smart Cold Chain
  • Smart Refrigeratory
  • Smart Pharmacy
Smart Cold Chain Smart Refrigeratory Smart Pharmacy
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. 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.

Standard Version

  • Smart Agriculture
  • Smart Building
  • Smart Factory
Smart Agriculture Smart Building Smart Factory
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

  • Compliant with standard LoRaWAN® gateways and network servers
  • Data transmission range up to 15 km in rural areas and 2 km in urban areas



Compliant with
Milesight IoT Cloud

LoRaWAN® EM320-TH Sensor is compatible with Milesight IoT Cloud to monitor and control the device at your fingertips.



Effortless Configuration via NFC

LoRaWAN® Gas Detector LoRaWAN® Gas Detector
1st Step
Install the Milesihgt ToolBox
2nd Step
Enable NFC and run ToolBox,
then attach your phone to the device
3rd Step
Verify the password
and start configuring



Wall Mounting

Magnetic Adsorption


Wireless Transmission Technology LoRaWAN®
Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power 16dBm (868)/20dBm(915)/19dBm(470)
Sensitivity -137dBm @300bps
Mode OTAA/ABP Class A
Measurement Temperature Range -30°C to + 60°C
Accuracy +/- 0.2°C
Resolution 0.1°C
Humidity Range 0% to 100% RH
Accuracy +/- 2%
Resolution 0.5% RH
Operation Power On & Off NFC Configuration via Mobile App, Power Button (Internal)
Configuration NFC Configuration via Mobile App
Physical Characteristics Power Supply 2 × 2700 mAh ER14505 Li-SOCL2 Batteries
Battery Life* ≥5 years
Operating Temperature -30°C to +60°C
Relative Humidity ≤95%
Material & Color ABS + PC (Food Grade), White
Ingress Protection IP67
Dimension 85 × 58 × 18 mm (3.34 × 2.28 × 0.70 in)
Installation Standard Version: Wall Mounting
Magnet Version: Magnetic Adsorption