
Ultrasonic Distance Sensor Measuring Distance 25–1000 cm EM400-UDL 868 – Milesight
The EM400-UDL 868 C100 is a LoRaWAN ultrasonic distance sensor for non-contact measurement of distance, level, and fill level from 25 to 1000 cm. It is designed for professional IoT deployments in industrial, infrastructure, and environmental monitoring applications where reliable outdoor measurement is required.
incl. VAT291,55 €excl. VAT245,00 €plusShipping Costs
1 in stock
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The EM400-UDL 868 in the C100 version is designed for accurate non-contact distance measurement up to 1000 cm. By using ultrasonic sensing, the device measures without direct contact with the target medium, making it well suited for applications where dirt, moisture, or buildup could interfere with other sensing methods. This makes it a practical option for reliable level monitoring, distance measurement, and water level sensing in demanding environments.
As a LoRaWAN sensor, the EM400-UDL 868 is built for low-power, long-range wireless deployments. It can be integrated into private or public LoRaWAN networks and is a strong fit for distributed monitoring points across industrial sites, municipal infrastructure, water management systems, and agricultural operations. Its long battery life supports installations where low maintenance is a key requirement.
In addition to distance measurement, the sensor also monitors temperature and tilt status. This adds useful operational context in real deployments, especially where device position or unusual temperature changes should be tracked alongside the main measurement value.
Typical use cases include tank and silo level monitoring, sewer and drainage level monitoring, flood and stormwater monitoring, and fill level control in barns or storage areas. It is also well suited for industrial process environments and infrastructure projects that require dependable long-term non-contact measurement.
With its IP67-rated enclosure, the EM400-UDL 868 is designed for outdoor use and harsh environments. NFC configuration, rugged construction, and a battery life of more than 10 years make it a solid choice for professional LoRaWAN sensing projects.
| Product | EM400-UDL |
|---|---|
| Version | C100 Standard Version |
| Manufacturer | Milesight |
| Wireless Technology | LoRaWAN® |
| Frequency | EU868 |
| Tx Power | 16 dBm (868 MHz) |
| Sensitivity | -137 dBm @300 bps |
| LoRaWAN Mode | OTAA/ABP Class A |
| Measurement Principle | Ultrasonic, non-contact distance measurement |
| Measuring Distance | 25–1000 cm |
| Accuracy | ± (1 + 0.3% × S) cm, S = distance (-15 °C to 60 °C) |
| Distance Resolution | 1 mm |
| Device Position | Normal / Tilt |
| Temperature Range | -40 °C to 125 °C |
| Temperature Resolution | 0.1 °C |
| LED | 1 × internal LED indicator |
| Button | 1 × internal power/reset button |
| Power On & Off | NFC, internal power button |
| Configuration | Mobile app via NFC |
| Advanced Features | Calibration, threshold alarm, tilt and distance switch |
| Power Supply | 2 × 9000 mAh ER26500 Li-SOCL2 batteries |
| Battery Life | > 10 years (10-minute interval, 25 °C) |
| Operating Temperature | -30 °C to 70 °C |
| Relative Humidity | ≤95% (non-condensing) |
| Ingress Protection | IP67 |
| Dimensions | 118 × 65 × 80 mm |
| Housing | ABS + PC (UL94 V0) |
| Color | Black gray |
| Weight | 252.7 g (batteries included) |
| Installation | On flat surfaces with screws |
| Approvals | CE, FCC |
| Environmental | RoHS |


