Milesight EM300-TH LoRaWAN® Temperature & Humidity Sensor (EU868)

€53,00 €56,00

:In stock

  • IP67 Rated and UV Resistance
  • Support Retransmission for Reliable Communication
  • Up to 10 Years Battery Life
  • Detect Temperature and Humidity with Higher Accuracy
  • Store Capacity with 2,800 Sets of Historical Data Records


Product Description

The Milesight EM300-TH is a highly versatile and robust temperature and humidity sensor, ideal for both indoor and outdoor monitoring. This sensor is particularly well-suited for applications in diverse environments, such as office areas and greenhouses. It boasts an industrial-grade design with an IP67-rated enclosure, offering excellent protection against dust and water ingress, and is UV resistant, ensuring durability even in harsh conditions. The EM300-TH is designed for longevity with a multi-year battery operation, supported by a 4000 mAh Li-SOCL2 battery that guarantees a service life of over five years and can extend up to ten years with dual battery holders​​.

Key Features

  • LoRaWAN® Technology: Ensures a wide data transmission range (up to 2 km in urban areas and 15 km in rural areas), making it highly compatible with standard LoRaWAN® gateways and network servers.
  • Data Retransmission Support: Guarantees reliable communication by ensuring all data reaches the web server, even in cases of occasional network downtimes.
  • Historical Data Records: Capable of storing 2,800 sets of data records, which cannot be manually deleted, thus enhancing data traceability.
  • Cloud Data Management: Integrates with the Milesight IoT Cloud for effective data visualization, automated triggers for scene-based automation, regular reports, real-time alerts, and easy management through an Android or iOS app.
  • NFC Configuration: Offers a convenient wireless setup and configuration process through NFC technology.
  • Durable and Easy Installation: Designed for simple wall mounting, complementing its sturdy build​​.

Technical Specifications

  • Temperature Measurement Range: -30°C to + 70°C with an accuracy of +/- 0.3°C (0°C to + 70°C) and +/- 0.6°C (-30°C to 0°C).
  • Humidity Measurement Range: 0% to 100% RH with an accuracy of +/- 3% (10% to 90% RH) and +/- 5% (below 10% and above 90% RH).
  • Power Supply: Powered by a 4000 mAh ER18505 Li-SOCL2 battery, extendable to 2 batteries.
  • Battery Life: Up to 10 years, based on a 10-minute interval setting.
  • Operating Conditions: Can operate in temperatures ranging from -30°C to +70°C and relative humidity from 0% to 100% (non-condensing).
  • Dimensions: 88.5 × 85.3 × 27 mm.
  • Certifications: Compliant with CE, FCC, and RoHS standards​.

The EM300-TH from Milesight is an advanced solution for accurate and reliable temperature and humidity monitoring, tailored for demanding and varied environmental conditions.

Product Specifications 

Wireless Transmission
Technology LoRaWAN®
Frequency EU868
Tx Power 16dBm (868 MHz)
Sensitivity -137dBm @300bps
Work 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)
Ingress Protection IP67
Operating Temperature -30°C to 70°C
Dimensions 88 × 87 × 27 mm
Installation Wall (screws or 3M adhesives)

Product Downloads 

Shipping Policy

We provide worldwide shipping using only tracked shipping services. Currently all our international shipments are performed by TNT Express and FedEx. Local shipments to Greece are performed either directly from us or using local shipping couriers (i.e. ELTA Courier).

We ship products within 1-3 days after the order is placed. You will be notified by email when your order is dispatched and you will receive the relevant shipment tracking number which you can use to track your shipment.

Shipment Tracking

You can use the following links to track your order using the provided tracking number in the case of international orders.
  • Orders shipped with TNT Express: TNT Tracking
  • Orders shipped with FedEx: FedEX Tracking
  • General Return Policy

    We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

    To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

    To start a return, you can contact us at If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

    For any further information, help and support regarding the shipping and/or return process you can contact us at:

  • Email:
  • Telephone: +30 210 421 2380