Milesight EM300-MCS LoRaWAN® Magnetic Contact Switch, Temperature and Humidity Sensor (EU868)

€70,00 €76,00

:In stock

  • P67 Rated and UV Resistance
  • Detect Temperature, Humidity and Door/Window Status
  • High Sensitivity with 20 to 30 mm Open/Close Sensing Distance
  • Customized Alarm Reporting Interval/Times
  • Up to 10 Years Battery Life


Product Description

The Milesight EM300-MCS is a versatile and robust LoRaWAN® Magnetic Contact Switch designed for monitoring door/window status and environmental conditions. It features an IP67 rated enclosure, ensuring durability against dust and water ingress, making it suitable for use in various indoor and outdoor environments. This device not only detects the opening and closing of doors and windows with high sensitivity (20 to 30 mm sensing distance) but also measures temperature and humidity. It is ideal for security and environmental monitoring, providing real-time alarming for unauthorized entry while also keeping track of ambient conditions.

Product Features

  • IP67 Rated and UV Resistance: Ensures durability and longevity in harsh environmental conditions.
  • Temperature and Humidity Detection: Accurate measurement with a temperature accuracy of ±0.3°C (0°C to 70°C) and humidity accuracy of ±3% (10% to 90% RH).
  • High Sensitivity: 20 to 30 mm open/close sensing distance for precise monitoring of door/window status.
  • Long Battery Life: Powered by a 4000 mAh ER18505 Li-SOCL2 battery, offering a service life of over 5 years, extendable to 10 years.
  • Data Retransmission Support: Guarantees data delivery to the web server, even in case of occasional network downtimes.
  • Historical Data Record Capacity: Stores up to 2,800 sets of data records.
  • LoRaWAN® Technology: Offers wide data transmission range (up to 2 km in urban areas and 15 km in rural areas) and is compatible with standard LoRaWAN® gateways and network servers.
  • NFC Capability: Enables wireless on/off switching and configuration of the device.
  • Physical Characteristics: The device measures 105.6 × 85.3 × 27 mm and has a customizable alarm reporting interval/times feature​.

The EM300-MCS is a comprehensive solution for monitoring and securing premises, providing valuable data for smart building management, security systems, and environmental monitoring.

Product Specifications 

Wireless Transmission
Technology LoRaWAN®
Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923
Tx Power 16dBm(868)/20dBm(915)/19dBm(470)
Sensitivity -137dBm @300bps
Mode OTAA/ABP Class A
Door Magnet
Detection Distance 20-30 mm
Cable Length 1.5 m
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
Range 0% to 100% RH
Accuracy 10% to 90% RH (+/- 3%), below 10% and above 90% RH (+/- 5%)
Resolution 0.5% RH
Power On & Off NFC, Power Button (Internal)
Configuration NFC Configuration via Mobile App
Physical Characteristics
Power Supply 1 × 4000 mAh ER18505 Li-SOCL2 battery (extendable to 2 batteries)
Battery Life* 10 years (10 min interval + 48 triggers per day)
Operating Temperature -30°C to +70°C
Relative Humidity 0% to 100% (non-condensing)
Ingress Protection IP67
Dimension Transceiver: 105.6 × 85.3 × 27 mm (4.16 × 3.36 × 1.06 in)
Magnet: 32 × 15 × 8 mm (1.25 × 0.59 × 0.31 in)
Installation Wall Mounting
Regulatory CE, FCC, RoHS

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