Ultrasonic Distance Sensor

Professional, Reliable and Durable

EM400-UDL

Cat M

em400 udl image 1 small
em400 udl image 2 small
em400 udl image 3 small
  • LoRaWAN® and NB-loT Versions for Broader Applications
  • Great Flexibility with Multiple Versions
  • Non-Contact Distance Measurement
  • Value-added Temperature and Tilt Monitoring
  • LoRaWAN & NB-IoT & CAT M Versions Available
  • Various Professional Applications
  • Long-Lasting Battery Life of up to 10 Years
  • Rugged and Reliable IP67 Rated Enclosure
  • Positioning Function Enabled by GNSS Modules (NB-loT Version)
  • FEATURES
  • MODELS
  • DOWNLOAD

EM400-UDL, as the versatile product among EM400 series, offering two versions - Standard and Pro with varying detection range, resolution, and accuracy, is designed to cater to the demands of professional applications. Equipped with prolonged battery life and robust IP67 rated enclosure, EM400-UDL is the perfect fit for professional and demanding applications. Additionally, its availability in both LoRaWAN® and NB-loT versions allows for a variety of application scenarios.

Explore Distance/Level Sensors

Get to Know Our Powerful and Versatile EM400 Series

(LoRaWAN® Version)

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LoRaWAN & NB-IoT &
CAT M Versions Available

For flexible and broad applications, LoRaWAN, NB-IoT and CAT M versions are available.

*Cellular band:
Cat M1:
B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85
Cat NB2:
B1/B2/B3/B4/B5/B8/ B12/B13/B18/B19/B20/B25/B28/B66/B71/B85

LoRaWAN® Version

  • Wide Area Coverage: Data transmission range up to 2 km in urban areas and 15 km in rural areas
  • Power Saving: Low battery consumption enabled by LoRaWAN® technology
  • More Deployment Freedom: Deployment options based on both private and public network facilities

NB-IoT & CAT M Versions Available

  • Stable Transmission: Reliable data transmission via cellular base stations
  • Positioning Capability: Equipped with GNSS module to help track your assets
  • Low Deployment Cost: Low deployment cost due to the presence of existing cellular base stations
  • Cumulative Reporting: Accumulate up to 24 data packets in each report, saving transmission cost and power consumption

Cat M

Non-Contact Distance
Measurement

Leveraging ultrasonic distance detection and featuring non-contact distance measurement, the probe of EM400-UDL will remain unaffected or contaminated by the medium detected, and deliver highly accurate measurement.

Great Flexibility with
Multiple Versions

EM400-UDL comes in two versions Standard and Pro versions with different probes optional. With 5 probes at choice, EM400-UDL provides great flexibility to satisfy various demands for professional applications.

em400 udl multiple versions
em400 udl temperature tilt monitoring 2
em400 udl temperature  tilt monitoring

Value-added Temperature
and Tilt Monitoring

Device Tilt Status Monitoring

The EM400-UDL is equipped with a built-in 3-axis accelerometer which can be used to monitor the device tilt status and alert the users whether the device is well positioned.

Temperature Monitoring

With built-in NTC thermistor, EM400-UDL can monitor the temperature and send alert in time if the temperature changes sharply which may indicate combustion.

em400 udl boiler expansion monitoring
em400 udl  tank fill level monitoring
em400 udl barn fill level monitoring
em400 udl flood monitoring
em400 udl sewer water level monitoring

Various Professional
Applications

Whether for industrial settings or in cities, EM400-UDL is dependable to provide accurate and reliable data to optimize operations and improve efficiency.

  • Boiler Expansion Monitoring
  • Tank Fill Level Monitoring
  • Barn Fill Level Monitoring
  • Flood Monitoring
  • Sewer Water Level Monitoring

Rugged and Reliable IP67
Rated Enclosure

IP67 rated enclosure ensures EM400-UDL is protected against dust, water, and other environmental hazards, enabling it to withstand harsh environment.

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

Ultra-long Battery Life of up to 10 Years

EM400-UDL is equipped with high-capacity and easily-replaceable batteries. The conditions of battery life are specified below:

  • LoRaWAN® Version: Over 10 years (10-min Interval, 25 °C)
  • NB-IoT/Cat M Version: TCP/UDP—10 years, MQTT/AWS—5 years (4 times report per day, each report includes 12 packages with 30-min collection interval, 25 °C)

Cloud Data Management
Milesight IoT Cloud

  • Data Visualization Dashboard:
    All figures in a glance
  • Automatic Triggers:
    Interactive collaboration with Milesight IoT sensors
    to realize scene-based automation
  • Regular Reports & Real-Time Alerts:
    Data-based insights
  • Android & iOS App:
    Manage devices at your fingertips

NFC Configuration

Switching On/Off & Configuring the Devices Wirelessly

em400 udl configuration 1

1st Step

Install the
Milesight ToolBox

em400 udl configuration 2

2nd Step

Enable NFC and run ToolBox,
then attach your phone to the device

em400 udl configuration 3

3rd Step

Verify the password
and start configuring

Explore More About NFC Configuration >>

Installation

em400 udl installation

Screw Mounting

Specifications

Measurement
Distance
RangeC050: 25 ~ 500 cm
C100: 25 ~ 1000 cm
Accuracy± (1+0.3%*S) cm1, S=distance(- 15°C ~ 60°C)
Resolution1 mm
Device Position
StatusNormal/Tilt
Temperature
Range-40 ~ 125°C
Resolution0.1°C
Wireless Transmission
LoRaWAN® Version
FrequencyCN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power16 dBm (868 MHz)/20 dBm (915MHz)/19 dBm (470MHz)
Sensitivity-137dBm @300bps
ModeOTAA/ABP Class A
NB-IoT/Cat M Version
Cellular BandCat M1: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85
Cat NB2: B1/B2/B3/B4/B5/B8/ B12/B13/B18/B19/B20/B25/B28/B66/B71/B85
SIM Slot1 (Micro SIM-3FF)
Application ModeTCP/UDP/MQTT/AWS/Milesight IoT Cloud2
Operation
Power On & OffNFC, Power Button (Internal)
ConfigurationMobile App (via NFC)
Physical Characteristics
Power Supply2 x 9000 mAh ER26500 Li-SOCL2 Batteries
Battery Life3LoRaWAN® Version: > 10 years (10-min Interval, 25°C)
NB-IoT/Cat M Version: TCP/UDP—Around 10 Years, MQTT/AWS—Around 5 Years (4 Times Report per Day, per Report Includes 12 Packages with 30-min Collection Interval, 25°C)4
Operating Temperature- 30°C ~ 70°C
Relative Humidity≤95% (non-condensing)
Ingress ProtectionIP67
Dimension118 × 65 × 80 mm
MaterialABS + PC (Flame Retardant)
ColorBlack gray (C050/C100), Gray (W050/W100/S050)
InstallationOn the Flat Surfaces with Screws

1 This accuracy is applicable to the measuring range of 25~800cm.
2 This accuracy is applicable to the measuring range of 25~800cm.
3 Tested under laboratory conditions and for guideline purposes only.
4 PSM is required for SIM card and will be impacted by cellular base station signals.

Measurement
Distance
RangeW050: 30 ~ 500 cm
W100: 50 ~ 1000 cm
Accuracy±1% FS(- 30°C ~ 65°C)
Resolution1 mm
Device Position
StatusNormal/Tilt
Temperature
Range-40 ~ 125°C
Resolution0.1°C
GNSS Positioning (NB-IoT/Cat M Version Only)
ParametersLongitude/Latitude
Resolution0.000001
Wireless Transmission
LoRaWAN® Version
FrequencyCN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power16 dBm (868 MHz)/20 dBm (915MHz)/19 dBm (470MHz)
Sensitivity-137dBm @300bps
ModeOTAA/ABP Class A
NB-IoT/Cat M Version
Cellular BandCat M1: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85
Cat NB2: B1/B2/B3/B4/B5/B8/ B12/B13/B18/B19/B20/B25/B28/B66/B71/B85
SIM Slot1 (Micro SIM-3FF)
Application ModeTCP/UDP/MQTT/AWS/Milesight IoT Cloud1
Operation
Power On & OffNFC, Power Button (Internal)
ConfigurationMobile App (via NFC)
Physical Characteristics
Power Supply2 x 9000 mAh ER26500 Li-SOCL2 Batteries
Battery Life2LoRaWAN® Version: > 10 years (10-min Interval, 25°C)
NB-IoT/Cat M Version: TCP/UDP—Around 10 Years, MQTT/AWS—Around 5 Years (4 Times Report per Day, per Report Includes 12 Packages with 30-min Collection Interval, 25°C)3
Operating Temperature- 30°C ~ 70°C
Relative Humidity≤95% (non-condensing)
Ingress ProtectionIP67
Dimension118 × 65 × 80 mm
MaterialABS + PC (Flame Retardant)
ColorBlack gray (C050/C100), Gray (W050/W100/S050)
InstallationOn the Flat Surfaces with Screws

1 Milesight IoT Cloud mode is under development.
2 Tested under laboratory conditions and for guideline purposes only.
3 PSM is required for SIM card and will be impacted by cellular base station signals.

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