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Milesight VO-EM300-TH Temperature and Humidity Sensor

Milesight VO-EM300-TH, the LoRaWAN sensor for temperature and humidity with storage for 2800 measurements, battery operation up to 5 years, extendable to 10 years, NFC

The Milesight VO-EM300-TH is the LoRaWAN sensor for temperature and humidity. It reliably measures ambient temperature and relative humidity and stores up to 2800 measurements internally. The data is wirelessly transmitted via LoRaWAN to a separately available gateway and stored in the Milesight Cloud. This gives you access to current readings and historical statistics from anywhere.

The Milesight VO-EM300-TH operates completely on batteries with very low power consumption. With one battery, it reaches a lifespan of about five years. With a second battery, the operating time extends to about ten years. Setup is conveniently done with an app via NFC directly using a smartphone. The sensor is weatherproof with protection class IP67 and can therefore be used both indoors and outdoors.

The Milesight VO-EM300-TH is the ideal solution for wireless monitoring of temperature and humidity in rooms, warehouses, greenhouses, or outdoor areas. It comes with mounting accessories included and is ready for immediate use. With the Milesight Cloud, you can view all measurement data online and set up notifications if required. The strong building penetration of the LoRaWAN protocol also allows reception in basements.

The Milesight VO-EM300-TH combines precise measurement with long battery life and simple NFC configuration. It is particularly low-maintenance and reliable. The sensor is designed for professional applications in industry, agriculture, building technology, and smart city projects.

Why the Milesight VO-EM300-TH is the best temperature sensor:

  • LoRaWAN sensor for temperature and humidity
  • Storage for 2800 measurements
  • Battery operation up to about 5 years with one battery
  • Extendable to about 10 years with a second battery
  • NFC configuration via smartphone app
  • Weatherproof with protection class IP67
  • Includes mounting accessories
  • Wireless transmission to the Milesight Cloud
  • High accuracy for temperature and humidity
  • Strong building penetration down to basements

Technical data:

  • LoRaWAN sensor for temperature and humidity
  • Storage for 2800 measurements
  • Battery operation about 5 years with one battery
  • Extendable to 10 years with a second battery
  • NFC configuration with mobile app
  • Protection class IP67
  • Spot sensor with 1.5 meter connection cable
  • Dimensions 85.3 by 88.5 by 27 millimeters
  • Ambient temperature minus 30 to plus 70 degrees Celsius
  • Ambient humidity 0 to 100 percent
Datasheets
Datasheet 1

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Datasheet 1 (384.08 KB)

Milesight VO-EM300-TH

Wireless Transmission

  • Technology: LoRaWAN®, Milesight D2D
  • Antenna: Internal
  • Frequency: CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
  • Transmit Power: 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
  • Sensitivity: -137 dBm @ 300 bps
  • Mode: OTAA / ABP Class A

Measurement

  • Temperature
    • Range: -30°C to +70°C
    • Accuracy: ±0.6°C (-30°C to 0°C), ±0.3°C (0°C to +70°C)
    • Resolution: 0.1°C
  • Humidity
    • Range: 0% to 100% RH
    • Accuracy: ±3% (10% to 90% RH at 25°C), ±5% (0% to 10% and 90% to 100% RH at 25°C)
    • Resolution: 0.5% RH

Operation & Display

  • LED: 1 × internal status LED
  • Button: 1 × Power/Reset (internal)

Software & Functions

  • Power On/Off: NFC or Power button
  • Configuration: NFC via Mobile App, Downlink
  • Advanced Functions:
    • Threshold Alarm
    • Milesight D2D Controller
    • Data Storage (2,800 entries)
    • Data Transmission & Recovery

Power Supply

  • 1 × 4000 mAh ER18505 Li-SOCl₂ Battery (optional 8000 mAh)
  • Battery Life (at 10-minute interval, 25°C):
    • > 10 years (SF7, EU868 / US915)
    • approx. 5.8 years (SF10, EU868)
    • approx. 4.2 years (SF10, US915)

Environmental Conditions

  • Operating Temperature: -30°C to +70°C
  • Humidity: 0% to 100% (non-condensing)
  • Protection Class: IP67

Housing & Mounting

  • Material: ABS + PC (flame-retardant)
  • Color: White
  • Mounting: Screw mounting, 3M adhesive tape, cable ties

Dimensions & Weight

  • 88.5 × 85.3 × 27 mm (W × H × D)
  • Weight: 95.6 g (with battery)

Certifications

  • CE, FCC, ISED, RCM, Telec, ICASA, EN12830
  • RoHS compliant

Manufacturer Information:

XIAMEN MILESIGHT IOT CO., LTD.

401, Building No. 37, Xixishanwei Road
Software Park Phase III

Torch Development Zone for High Technology Industries
Xiamen, China

Phone: +86-592-5922772

Email: sales@milesight.com

Responsible person:

Didactum® Security GmbH

Im Mühlenfeld 4

48163 Münster
Deutschland

Fon: (+49) 2501 92 90 160 oder (+49) 171 33 11 577

Email: info@didactum-security.de

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