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.

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incl. VAT291,55 excl. VAT245,00 plusShipping Costs

1 in stock

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Product Description Technical Details

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