Milesight EM320-TH is an IP67 rated high precision wireless logger for monitoring and reporting of ambient temperature and humidity.

It is equipped with high-precision sensors and IP67 waterproof design for accurate temperature and humidity data detection in demanding environments. The specifically designed food-grade material’s enclosure and magnet design allow it to be placed in freezers and refrigerators and in contact with food or medicines safely.

The EM320 is suitable for a wide range of indoor and outdoor applications such as cold chain transportation, greenhouses, office buildings, hospitals and manufacturing facilities.  



  • Network connectivity: Spark LoRaWAN network 
  • Temperature range 30°C to + 60°C, accuracy +/- 0.2°C 
  • Humidity range 0% to 100% RH, accuracy +/- 2% 
  • Frequency of sampling: default 15 minutes, configurable (note: increased frequency of sampling impacts battery lifetime) 
  • Battery type 2 × 2700 mAh ER14505 Li-SOCL2 Batteries 
  • Expected battery lifetime ≥5 years 
  • Ingress Protection IP67 
  • Installation: On flat surfaces with screws with 3M tape

Available on IoT Bridge

Leveraging Microsoft Azure platform and Qrious, IoT Bridge is a central dashboard that lets you control, configure and get insights from your IoT devices.

Find out more

Related devices


Why choose Spark?

Our partnerships

We've partnered with a range of best in class local and international expertise to ensure your business has the most suitable IoT solution.

Our service

We have dedicated experts ready to identify your business problems and opportunities, then plan and deploy the right IoT solution for your business needs.

One stop shop

Our complete range of IoT solutions include hardware, connectivity, data analytics and insights and after sales support. Everything you need in one place to get your business to the future, today.

Browse solutions

Together with our forward-thinking local and global partners, we can provide the right end-to-end IoT solutions to meet your business needs. Our IoT solutions could help you reduce costs, improve health and safety, save time on monitoring and reporting, or increase efficiency and return on investment.

See IoT solutions