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EM300 Magnetic Contact Switch Sensor


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EM300 Magnetic Contact Switch Sensor

EM300 Magnetic Contact Switch Sensor

The Milesight EM300-MCS Magnetic Contact Switch Sensor is an ultimate solution for real-time monitoring of unauthorized entries. Designed to provide seamless security, this sensor alerts you instantly to any unauthorized access, ensuring peace of mind for your property or premises. With its high sensitivity and precise detection capabilities, the EM300-MCS guarantees reliable performance, boasting an open/close sensing distance of 20 to 30 mm.

Crafted with durability in mind, this sensor is IP67 rated, offering exceptional resistance to water and dust ingress. Its UV-resistant construction ensures long-term reliability even in harsh environmental conditions, making it suitable for both indoor and outdoor applications. Moreover, the EM300-MCS doesn't just stop at intrusion detection; it also offers comprehensive monitoring capabilities, including temperature and humidity sensing alongside door/window status detection.

With customizable alarm reporting intervals and times, the EM300-MCS puts you in control of your security system. Whether you require instant notifications or periodic updates, this sensor can be tailored to suit your specific needs. Furthermore, boasting an impressive battery life of up to 10 years, it ensures long-term reliability without the hassle of frequent battery replacements. Elevate your security infrastructure with the Milesight EM300-MCS Magnetic Contact Switch Sensor and experience unparalleled peace of mind.


Enhanced Remote Control Accessibility
Effortlessly power on/off electrical appliances using your smartphone from anywhere.

Customisable Alarm Features
Tailor alarm settings to your specific needs with adjustable reporting intervals and frequency, providing adaptable functionality across diverse scenarios.

3 Sensors in 1
The EM300-MCS consolidates temperature and humidity sensors into a single device for comprehensive monitoring capabilities.
Temperature: + 0.3°C (0°C ~ 70°C)
Humidity: + 3% (10% ~ 90%)

Robust Industrial Design for Challenging Environments
Built to withstand harsh conditions with an IP67 enclosure, ensuring protection against dust and water ingress, along with UV resistance.

Long-Term Battery Operation
Powered by a high-capacity ER18505 Li-SOCL2 battery (4000 mAh, optionally 8000 mAh), guaranteeing over 5 years of service life and extendable to over 10 years.

Reliable Communication with Retransmission Support
Ensures uninterrupted data transmission to the web server, even during occasional network outages, through built-in data retransmission capabilities.

Extensive Data Storage
Capable of storing up to 2,800 sets of historical data records within the device, enhancing data traceability and security by preventing manual deletion.

LoRaWAN® Connectivity
Utilizes LoRaWAN® technology for robust and long-range data transmission, with a range of up to 2 km in urban areas and 15 km in rural environments, compatible with standard LoRaWAN® gateways and network servers.

Streamlined Cloud Data Management
Access comprehensive data visualization dashboards for instant insights, leverage automatic triggers for scene-based automation with Milesight IoT sensors, receive regular reports and real-time alerts, and manage devices effortlessly through the Android and iOS app.

Effortless NFC Configuration
Enable wireless switching and configuration of devices with NFC technology for seamless operation.


Datasheet  User guide  Payload Decoder Firmware & SDK

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