SKU: SEN-000189-915



The EM300-MCS can be mounted to any door or window to detect an opening or closing event. It adds physical security monitoring to your location by alarming for intrusion or unauthorized entry to your monitored conditions.

Combining with LoRaWAN® gateway and IoT Cloud solution, users can manage all sensor data remotely and visually.

EM300-MCS is widely used for both indoor and outdoor applications such as offices, hospitals, factories, greenhouses, etc.

Key Features

  • Security Alarm for Door Opening
  • Temperature Range -30°C to + 70°C
  • Humidity Range 0% ~ 100% RH
  • Shock-resistant and Vibration-resistant
  • IP67, Weather and Waterproof
  • LoRaWAN Wireless Transmission with ultra-low power consumption and easy
  • deployment
  • Built-in 4000 mAh high-capacity battery can be used for 5-10 years.
  • NFC enabled
  • Easy Installation

Key Retrieval 

After your order is fulfilled, you will receive an email from CalChip Connect with instructions on how to retrieve the LoRaWAN® EUIs and keys for your sensor devices. Subject line of the email will be: "CalChipConnect Order - Important information to use your sensors".

Technical Documentation

Download Datasheet
Download User Guide

Milesight EM300-MCS Magnetic Contact Switch