Selective probes from 25 cm
Selective probes from 25 cm to 10 m range.
EM400-UDL Milesight Ultrasonic Distance Sensor
Ultrasonic Distance Sensor
Order codeEM400-UDL In stockOfficial distributor
The EM400-UDL is an Ultrasonic Distance Sensor. C050/C100 compact probes suit short-range tanks; W050/W100 wide-beam probes cover longer industrial ranges; S050 supports specialized layouts.
- LoRaWANCN470/IN865/RU864/EU868/US915/
- PowerLoRaWAN >10 years; NB TCP/UDP
- ProtectionIP67
- Operating–40 … +125 °C
- In stockVilnius warehouse · EU
- In stockLondon warehouse · UK
Dispatch and lead time are confirmed in the quote.
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
Overview
EM400-UDL overview
Overview
The EM400-UDL is a non-contact ultrasonic distance sensor for liquid level and distance measurement. Standard and Pro versions with five probe options cover ranges from 25 cm to 10 m for professional indoor and outdoor applications.
Non-Contact Ultrasonic Measurement
Ultrasonic sensing keeps the probe unaffected by the medium, delivering accurate level data for static or slow-flowing water bodies, tanks and industrial vessels.
Flexible Probe Options
C050/C100 compact probes suit short-range tanks; W050/W100 wide-beam probes cover longer industrial ranges; S050 supports specialized layouts. Resolution is 1 mm across variants.
Value-Added Monitoring
A 3-axis accelerometer reports device tilt status while an NTC thermistor monitors temperature, alerting to sharp changes that may indicate combustion or misalignment.
Dual Connectivity
LoRaWAN integrates with Milesight gateways and IoT Cloud. NB-IoT/Cat.M adds cellular backhaul, cumulative reporting and GNSS asset tracking.
Built for Harsh Sites
IP67 sealing, conformal PCBA coating and two high-capacity batteries support up to 10 years of maintenance-free operation outdoors.
Key features
Standard and Pro versions
Standard and Pro versions with varying accuracy.
Built-in tilt and temperature monitoring
Built-in tilt and temperature monitoring.
LoRaWAN and NB-IoT/Cat.M with GNSS
LoRaWAN and NB-IoT/Cat.M with GNSS (cellular).
IP67 rugged enclosure with conformal
IP67 rugged enclosure with conformal PCBA coating.
Two 9000 mAh batteries
Two 9000 mAh batteries, up to 10 years.
NFC configuration
NFC configuration.
2 × 9000 mAh ER26500
2 × 9000 mAh ER26500 Li-SOCl2 batteries.
Technical data
EM400-UDL specifications
| LoRaWAN® Version | |
|---|---|
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz) |
| Sensitivity | −137 dBm @300 bps |
| Mode | OTAA/ABP Class A |
| NB-IoT/Cat.M Version | |
| Cellular Band | Cat M1 and Cat NB2 multi-band |
| SIM Slot | 1 × Micro SIM (3FF) |
| Application Mode | TCP/UDP/MQTT/AWS |
| GNSS | Longitude/latitude, 0.000001 resolution |
| Specifications | |
| Standard Range | C050: 25 ~ 500 cm; C100: 25 ~ 1000 cm |
| Pro Range | W050: 30 ~ 500 cm; W100: 50 ~ 1000 cm |
| Accuracy | Standard: ±(1+0.3%×S) cm; Pro: ±1% FS |
| Resolution | 1 mm |
| Device Position | Normal/tilt (3-axis accelerometer) |
| Temperature | −40 ~ 125 °C, 0.1 °C resolution |
| Specifications | |
| Power Supply | 2 × 9000 mAh ER26500 Li-SOCl2 batteries |
| Battery Life | LoRaWAN >10 years; NB TCP/UDP ~10 years, MQTT/AWS ~5 years |
| Operating Temperature | −30 °C ~ 70 °C |
| Ingress Protection | IP67 |
| Dimensions | 118 × 65 × 80 mm |
No specification rows match the filter.
Applications
EM400-UDL applications
Tank & Vessel Level
Water, chemical and storage tanks are monitored for fill level without contact with the medium, reducing contamination and maintenance.
Flood & Sewer Monitoring
Outdoor installations track river, sewer and impoundment levels with long battery life and IP67 protection.
Agriculture & Barn Storage
Grain, feed and liquid storage silos benefit from non-contact level data over LoRaWAN backhaul.
Industrial Infrastructure
Boiler expansion, cooling reservoirs and process vessels use tilt and temperature alarms alongside distance readings.
Documentation
EM400-UDL downloads
Questions
EM400-UDL questions and answers
How is the EM400-UDL powered?
LoRaWAN >10 years; NB TCP/UDP, according to the specification.
What ingress protection does the EM400-UDL have?
IP67, according to the specification.
What is the operating temperature of the EM400-UDL?
–40 … +125 °C, according to the specification.
What lorawan does the EM400-UDL provide?
CN470/IN865/RU864/EU868/US915/, according to the specification.
Request a quote
EM400-UDL price and lead time
Tell us the quantity and the delivery country. We reply within one working day with the price, stock at the nearest warehouse and the dispatch date.
European headquarters+370 655 51654[email protected]
United Kingdom branch+44 7425 726932[email protected]
- Company code306755852
- VAT numberLT100017217417
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
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