---
lang: "en"
title: "EM400-UDL Ultrasonic Sensor NB-IoT Distance Sensor"
canonical_url: "https://shop.marcomweb.it/en/converters-sensors/em400-udl-ultrasonic-sensor-nb-iot-distance-sensor"
brand: "MARCOM S.r.l."
---

## Available variants

---
title: "EM400-UDL Ultrasonic Sensor NB-IoT Distance Sensor — Variant: Range 0.3~5 m ±1% FS (-30°C ~ 65°C)"
sku: "EM400-UDL-N03GL-W050"
canonical_url: "https://shop.marcomweb.it/en/converters-sensors/em400-udl-ultrasonic-sensor-nb-iot-distance-sensor?config=2188"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "EM400-UDL Ultrasonic Sensor NB-IoT Distance Sensor — Variant: Range 0.5~10 m ±1% FS (-30°C ~ 65°C)"
sku: "EM400-UDL-N03GL-W100"
canonical_url: "https://shop.marcomweb.it/en/converters-sensors/em400-udl-ultrasonic-sensor-nb-iot-distance-sensor?config=2189"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "EM400-UDL Ultrasonic Sensor NB-IoT Distance Sensor — Variant: Range 0.25~5 m ±(1+0.3%*S) cm, S = Distance (-15°C ~ 60°C)"
sku: "EM400-UDL-N03GL-C050"
canonical_url: "https://shop.marcomweb.it/en/converters-sensors/em400-udl-ultrasonic-sensor-nb-iot-distance-sensor?config=2190"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "EM400-UDL Ultrasonic Sensor NB-IoT Distance Sensor — Variant: Range 0.25~10 m ±(1+0.3%*S) cm, S = Distance (-15°C ~ 60°C"
sku: "EM400-UDL-N03GL-C100"
canonical_url: "https://shop.marcomweb.it/en/converters-sensors/em400-udl-ultrasonic-sensor-nb-iot-distance-sensor?config=2191"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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EM400-UDL NB-IoT Ultrasonic Distance Sensor

The EM400-UDL is the most versatile product in the EM400 series, offering three versions: Standard, Pro, and Snow Level with different detection ranges, resolution, and accuracy, designed to meet the needs of professional applications. Equipped with a long-life battery and a robust IP67 enclosure, the EM400-UDL is perfect for professional and demanding applications. Additionally, its availability in LoRaWAN® and NB-loT versions allows for a variety of application scenarios.

Utilizing ultrasonic distance detection, the EM400-UDL ensures stable and reliable performance in detecting various solid or liquid fluids. Thanks to non-contact distance measurement, the EM400-UDL probe is not affected or contaminated by the sensing medium and guarantees extremely accurate measurements.

The EM400-UDL is available in three versions: Standard, Pro, and Snow Level with different optional probes. With a choice of 5 probes, the EM400-UDL offers great flexibility to meet the diverse needs of professional applications.

![](https://www.milesight-iot.com/wp-content/uploads/2023/03/em400-udl-measurement-range.png)

Robust and Reliable IP67
IP67 Rated
The IP67 rated enclosure ensures the EM400-UDL is protected from dust, water, and other environmental hazards, allowing it to withstand harsh environments.

The EM400-UDL also features a conformal coating on its PCBA, providing an additional layer of protection against moisture, dust, and other contaminants that can damage electronic components.

These two features extend the lifespan of the EM400-UDL and ensure its reliable operation even in challenging conditions.

The EM400-TLD is equipped with high-capacity, easily replaceable batteries. This simplifies the installation and maintenance process and reduces wiring costs.

### Various Professional Applications

The EM400-UDL is an excellent choice for a wide range of applications. Whether in industrial environments or cities, the EM400-UDL can provide accurate and reliable data to optimize operations and improve efficiency.

- Boiler Expansion Monitoring
- Tank Fill Level Monitoring
- Livestock Stall Fill Level Monitoring
- Flood Monitoring
- Sewer Water Level Monitoring

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Source: https://shop.marcomweb.it/en/converters-sensors/em400-udl-ultrasonic-sensor-nb-iot-distance-sensor

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.