Ultrasonic Distance Sensor

The Milesight EM400-UDL is a cutting-edge ultrasonic distance and level sensor for high-accuracy, contactless measurement in a wide range of indoor and outdoor applications. Utilizing LoRaWAN® technology for low-power, long-range communication, this device enables smart cities and industrial operations to streamline waste management, water monitoring, flood detection, and other processes. Its IP67-rated rugged construction, long battery life, and versatile deployment options make it the go-to device for IoT systems.

Key Features:

Precise Ultrasonic Measurement

The EM400-UDL provides precise distance and level measurements over a range of up to 5 meters, with measurement accuracy of ±1% under normal conditions (20°C, unobstructed surface). Its non-contact operation guarantees consistent performance without wear or contamination hazards.

LoRaWAN® Wireless Connectivity

Driven by the LoRaWAN protocol, the device allows for smooth integration with top IoT platforms such as The Things Network, ChirpStack, and Actility. It provides long-range coverage of up to 15 km (line of sight) with minimal power consumption.

Rugged IP67 Industrial Housing

Built to endure tough environments, the EM400-UDL has an IP67-rated housing that is resistant to dust, rain, and harsh temperatures — best suited for outdoor installation and industrial areas.

Up to 10 Years Battery Life

With replaceable high-capacity batteries, the product can run for up to 10 years under a normal reporting interval of one transmission per day, minimizing maintenance frequency and overall ownership expenses.

Easy Configuration with NFC

With NFC technology, the sensor is easily configured through the Milesight Toolbox app, allowing rapid setup, firmware upgrades, and on-site fine-tuning without physical connection.

Flexible Reporting & Trigger Modes

Users may customize data reporting intervals, distance thresholds, and event-triggered alerts to accommodate different operational needs, ranging from real-time monitoring to occasional data collection.

Improved Security

The EM400-UDL has end-to-end AES-128 encryption, conforming to LoRaWAN® security requirements, providing data integrity and privacy for sensitive monitoring applications.

Special Benefits:

Non-Contact and Low Maintenance

The ultrasonic technology eschews contact with monitored material, which renders it suitable for liquid level measurement, solid waste, or chemical measurement without any risk of fouling or corrosion.

Seamless IoT Integration

Supporting mainstream IoT platforms and LoRaWAN® networks, the EM400-UDL provides centralized monitoring, automated reporting, and data-informed decision-making.

Energy and Cost Efficiency

With low power consumption and extended battery life, the unit assists organizations in minimizing maintenance visits, operational expenses, and environmental footprint.

Tailorable to Varied Requirements

Whether you need high-frequency flood monitoring or weekly waste bin level measurement, the adaptable configuration means that the EM400-UDL will conform to your particular application.

Target Applications:

Smart Waste Management

Precisely monitors fill levels in public trash cans and industrial dumpsters, assisting municipalities and waste management firms in optimizing collection routes and saving fuel.

Water and Flood Monitoring

Tracks water levels in rivers, reservoirs, storm drains, and flood zones, issuing real-time alerts to avoid flooding and efficiently manage water resources.

Industrial Tank and Silo Monitoring

Monitors materials level in storage tanks and silos, aids inventory management, prevents overflows, and enables timely refills in manufacturing and processing plants.

Agricultural Resource Management

Monitors water storage in irrigation tanks and feed levels in livestock silos, aiding more intelligent use of resources and minimizing waste in agricultural activities.

Smart Cities and Infrastructure

Embedded in smart city infrastructure, it strengthens urban governance through data-driven waste collection, flood management, and water resource monitoring.

Why Choose the Milesight EM400-UDL?

With its accurate sensing, rugged construction, and seamless IoT connectivity, the Milesight EM400-UDL provides a robust solution for distance and level monitoring across different environments. It exceeds expectations compared to conventional ultrasonic sensors with longer battery life, broader coverage range, and greater security functionalities — providing reliable performance in both urban and rural environments.

Specifications