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Milesight EM400 Multifunctional Ultrasonic Distance/Level Sensor

SKU: EM400-MUD-N03GL PN: B045-2

A robust and highly accurate EU868 LoRaWAN® ultrasonic sensor designed for reliable, long-range distance and level monitoring in demanding smart city and industrial environments.

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Product Description

The Milesight EM400 Multifunctional Ultrasonic Distance/Level Sensor is a robust, non-contact measurement device engineered for reliable level monitoring of liquids or solid waste in large containers, silos, and open bodies of water. Utilising ultrasonic technology, the EM400 accurately measures the distance to the surface, providing critical data for efficient resource and logistics management.

Leveraging the energy-efficient LoRaWAN® protocol, the EM400 ensures reliable, long-range wireless data transmission, which is perfect for deployment in remote or challenging outdoor areas like waste depots, water treatment facilities, and agricultural sites. Its design prioritises extreme durability, featuring an IP67-rated enclosure that guarantees protection against heavy rain, dust, and harsh weather conditions.

The EM400 offers high versatility, capable of monitoring distance and, critically, translating that into a calculated level or fill percentage. Its non-contact operation prevents sensor contamination and wear, making it perfectly suited for monitoring corrosive liquids or unsorted waste materials.

The EM400 finds ideal use in many areas, such as:

  • Smart Waste Management (Monitoring refuse skip and bin fill-levels)
  • Water Management (Measuring water levels in rivers, tanks, or reservoirs)
  • Logistics and Storage (Silo and bulk material level monitoring)
  • Facility Management (Measuring lubricant or chemical levels in industrial tanks)
  • Agriculture (Irrigation water monitoring)

This smart device transmits measured distance and calculated level data to a connected LoRaWAN® gateway. The data is then forwarded to your chosen third-party platform for monitoring, alarming (e.g., high-level warnings), and trend analysis by a LoRaWAN® network server.

Variants Available

Product Code Connectivity
EM400-MUD NB-IoT NB-IoT
EM400-MUD EU868 EU868

Features

  • Ultrasonic Technology: Provides accurate, non-contact level and distance measurement.
  • Level Calculation: Converts distance data into tank level or fill percentage based on user settings.
  • Outdoor Durability: IP67-rated enclosure protects against water and dust in harsh external environments.
  • Extreme Battery Life: Long service life of up to 10 years (typical conditions), minimising maintenance cost.
  • LoRaWAN®: Reliable, long-range wireless data transmission for remote monitoring applications.
  • Local Data Storage: Provides local storage of up to 10,000 records, preventing data loss.
  • Easy Configuration: NFC-enabled for streamlined setup and bulk provisioning via mobile app.
  • Compatibility: Works seamlessly with standard LoRaWAN® gateways and Milesight IoT Cloud.

Parameters

  LoRaWAN® Version NB-IoT / Cat.M Version
Wireless Transmission
Protocol LoRaWAN® NB-IoT / Cat.M
Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 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
Tx Power 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz) N/A
Sensitivity -137 dBm @ 300 bps N/A
Mode OTAA/ABP Class A TCP, UDP, MQTT, AWS IoT
SIM Slot N/A 1 × Micro SIM (3FF)
GNSS N/A GPS (for Tracking & Security)
Ultrasonic Distance Measurement
Detection Range 3 ~ 450 cm
Accuracy ± 1% FS
Resolution 1 mm
Additional Sensors
Temperature Sensor NTC Thermistor (Internal, for Combustion Detection)
Accelerometer 3-Axis (Tilt Status & Bin Lid Monitoring)
Software & Features
Pre-set Modes Standard Mode, Bin Mode, Parking Lot Mode1 Standard Mode, Bin Mode
Configuration Mobile App via NFC (Card Emulation Supported)
Advanced Features Cumulative Reporting (Up to 24 Packets per Report), Threshold Alarm, FUOTA
Cloud Compatibility Milesight IoT Cloud, AWS IoT, ThingsBoard, ChirpStack, TTN
Dimensions 118 × 65 × 32.5 mm
Weight 181.4 g (With Batteries)
Housing & Colour ABS & PC (UL94 V0), Black/Grey
Installation Flat Surface Mounting via Screws
Operating Temperature -30°C ~ +70°C
Relative Humidity ≤ 95% (Non-condensing)
Ingress Protection IP67
Regulatory CE, FCC, RoHS
Power Supply 2 × 9000 mAh ER26500 Li-SOCl2 Replaceable Batteries
Battery Life2 LoRaWAN® Version:
Standard Mode: Over 10 Years (10-min Interval, 25°C)
Bin Mode: Over 10 Years (20-min Interval, 25°C)
Parking Lot Mode: Around 5 Years (12 Triggers per Day, 25°C)
NB-IoT / Cat.M Version:
TCP/UDP: Around 10 Years
MQTT/AWS: Around 5 Years
(4 Reports per Day, 12 Packages per Report, 30-min Collection Interval, 25°C)3

Discounted Trade Pricing: Contact us for trade pricing, to place an order or to discuss your IoT projects.

For free, impartial advice on level sensing and fill-level solutions, speak with a member of our team. We are always happy to help.

All of our products are available for delivery across Europe, with selected items available for same-day dispatch.

 

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