EM300-TH Temperature & Humidity Sensor

EM300-TH Temperature & Humidity Sensor


Temperature & Humidity

Sensor LoRaWAN

  • IP67 Waterproof
  • LoRaWAN® Wireless
  • 5/10 Years Battery Life
  • NFC for Configuring

High Sensitive Sensor

  • -30°C to 70°C
  • 0% to 100% RH

EM300-TH Adopts Sensirion industrial-grade digital temperature & humidity sensor, providing ±0.3℃ high accuracy of temperature and ±3% RH of humidity


  1. EM300-TH compatible with industry-standard LoRaWAN® gateways
  2. With a range of up to 15 km in rural areas and 2 km in urban areas

IP67 Waterproof

EM300-TH equipped with IP67 rated enclosure to fit into more application scenarios
Dustproof and Waterproof
Industrial Grade Design


EM300-TH Temperature & Humidity Sensor



Ultra Low Power Consumption

Easily replaceable battery with up to 10 years service life

  • ER18505 4000 mAh Li-SOCl2 Battery
  • Dual Battery Holders (One Battery by Default)


Easy to Use

Switching on/off and configuring the device via NFC technology from mobile phone or PC

1st Step
Install the Milesight ToolBox (Android/iOS).

2st Step
Enable NFC and run ToolBox,
attach your phone to the device.

3st Step
Verify the password and start configuring.

Milesight IoT Cloud

  • Remote monitoring of temperature and humidity with a phone
  • Collaborative interaction with a variety of Milesight sensors
  • Android & iOS versions allows you to manage devices at your fingertips


Residence / Office / Lab / Warehouse / Greenhouse / Cold Chain / Food Preservation
    LoRaWAN® Frequency CN470/RU864/IN865/EU868/US915/AU915/KR920/AS923
    Tx Power 20dBm (915) / 16dBm (868) / 17dBm (470)
    Sensitivity -137dBm @300bps
    Mode OTAA/ABP Class A
    Temperature Measurement Range -30°C to + 70°C
    Accuracy 0°C to + 70°C (±0.3°C), -30°C to 0°C (±0.6°C)
    Resolution 0.1°C
    Humidity Measurement Range 0% to 100% RH
    Accuracy 10% to 90% RH (±3%), below 10% and above 90% RH(±5%)
    Resolution 0.5% RH
    Physical Characteristics Power Supply ER18505 Li-SOCl2 4000 mAh battery (8000 mAh optional)
    Battery Life ≧ 5 years ( for 1 battery)
    Operating Temperature -30°C to 70°C
    Ingress Protection IP67
    Dimension 88 × 87 × 27 mm
    Mounting Wall (screws or 3M adhesives)