Monitor liquid levels, tank fill levels, snow depth, and object presence with the EM400-UDL NB-IoT Ultrasonic Distance Sensor. Using non-contact ultrasonic technology, the EM400-UDL delivers reliable distance and level measurements without contacting the measured material, making it ideal for demanding outdoor and industrial applications.
The NB-IoT version is well suited for remote installations where deploying a gateway is impractical, using existing cellular infrastructure for secure, long-range connectivity. Integrated with EnvOS®, the EM400-UDL provides real-time monitoring, alerts, and historical trending for a wide range of custom applications.
Features
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Non-contact ultrasonic distance measurement
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NB-IoT cellular communication
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Multiple measurement ranges up to 10 m (model dependent)
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Built-in temperature sensor
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Tilt detection with integrated 3-axis accelerometer
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Rugged IP67 weatherproof enclosure
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Up to 10-year battery life*
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NFC configuration for simple setup
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GNSS location support for remote deployments
Typical Applications
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Water tank level monitoring
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Irrigation reservoirs
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Silo and bin fill levels
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Snow depth monitoring
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Flood and water level monitoring
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Object presence detection
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Remote industrial monitoring
EnvOS® Integration
When connected to EnvOS®, the EM400-UDL enables:
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Real-time distance and level monitoring
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Historical trends and reporting
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Custom alarms and notifications
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Remote monitoring over cellular NB-IoT networks
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Integration with climate, irrigation, outdoor weather, and custom monitoring applications
