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Milesight EM500-UDL-915M PN: W050 Ultrasonic Distance and Level Sensor

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Milesight EM500-UDL W050 ultrasonic distance and level sensor, grey IP67 LoRaWAN device with downward-facing ultrasonic sensing horn
  • Milesight EM500-UDL W050 ultrasonic distance and level sensor, grey IP67 LoRaWAN device with downward-facing ultrasonic sensing horn

Product Description

Milesight EM500-UDL-915M PN: W050 Ultrasonic Distance and Level Sensor is a non-contact ultrasonic sensor designed to measure object distance and liquid or tank levels and transmit readings over LoRaWAN®. The W050 model is designed for 0.3 to 5 m distance measurement with a manufacturer-specified accuracy of ±1% full scale (FS) and 1 mm resolution. It is suited to water tanks, storage reservoirs and outdoor level-monitoring applications when correctly installed and configured.

The W050 version operates at −30°C to +65°C, up to 80% RH non-condensing, and uses an IP67 enclosure in grey ABS + PC. The integrated unit measures 156.1 × 71 × 69.5 mm, with an OEM-stated weight of 370.4 g including battery and mounting bracket. It supports pole, wall or DIN-rail mounting. Measurements are made without contact with the measured material.

Wireless and management features: LoRaWAN® OTAA/ABP Class A, Milesight D2D, NFC mobile-app setup, USB Type-C console/PC setup and remote parameter configuration by LoRaWAN downlink. The device supports 1,000 locally stored records, data retrieval and retransmission, threshold and change alarms, and a replaceable 19,000 mAh ER34615 Li-SOCl₂ battery. Milesight's 10-year battery-life figure is a laboratory estimate at 10-minute reporting interval and 25°C; actual service life can vary.

Regional frequency note: The existing listing SKU 2ESE2178 is designated EM500-UDL-915M, PN W050. The EM500-UDL family offers regional frequency options including IN865 and US915, but Indian IN865 compatibility of this exact 915M item must be confirmed with Milesight or the supplier before deployment. This listing uses W050 specifications only; other EM500-UDL measurement variants are not represented.

OEM link: Milesight EM500-UDL Ultrasonic Distance and Level Sensor.

Applications

Tank Level Monitoring Liquid Level Monitoring Water Level Monitoring Municipal Water Management

Product Specifications

OEM / BrandMilesight
Product ModelEM500-UDL
Exact Measurement VariantW050
Model Suffix915M
TwoElectrons SKU2ESE2178
Product CategoryUltrasonic Distance & Level Sensor
Measurement PrincipleNon-contact ultrasonic
W050 Measurement Range0.3–5 m
W050 Measurement Accuracy±1% FS
W050 Measurement Resolution1 mm
W050 Operating Temperature−30°C to +65°C
W050 Relative Humidity0–80% RH, non-condensing
W050 Ingress ProtectionIP67
W050 HousingABS + PC
W050 Housing ColorGrey
W050 Weight370.4 g (with battery and mounting bracket)
W050 Dimensions156.1 × 71 × 69.5 mm
Device InstallationPole / Wall / DIN rail
Wireless TechnologyLoRaWAN®, Milesight D2D
AntennaInternal
Regional Frequency OptionsCN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1, -2, -3, -4
Transmission Power16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
Receiver Sensitivity−137 dBm at 300 bps
LoRaWAN ModeOTAA/ABP, Class A
Wireless Transmission DistanceUp to 10 km line-of-sight in suitable conditions
Internal LED1 × LED indicator
Internal Button1 × Power/Reset
Internal USB Interface1 × USB Type-C for configuration and console
Power On/Off MethodsNFC or internal power button
ConfigurationMobile app via NFC / PC software via USB Type-C / LoRaWAN downlink
Internal Data StorageUp to 1,000 entries
Data ManagementRetransmission and data retrievability
Alarm FeaturesThreshold and change alarm
Advanced FunctionMilesight D2D Controller
Battery Specification1 × 19,000 mAh ER34615 Li-SOCl₂ battery
Battery Service-Life Reference10 years at 10-minute interval, 25°C; OEM laboratory estimate
Manufacturer Regulatory ApprovalsCE / FCC / ISED / Telec / LoRaWAN Certified
EMC StandardsEN 55032, EN 55035
EMS StandardsIEC 61000-4-2 Level 3 / IEC 61000-4-3 Level 2 / IEC 61000-4-8 Level 4
Radio StandardsFCC Part 15B / FCC Part 15.247 / EN 300 330 / EN 301 489-1/3 / EN 300 220-1/2
Safety StandardEN 62368-1
Environmental ComplianceRoHS
India Region NoteEM500-UDL family lists IN865; supplied 915M band to be verified

Product Features

  1. This SKU is EM500-UDL-915M PN W050; the measurement table on this listing is specific to W050 only.
  2. Uses ultrasonic time-of-flight measurement for non-contact object distance or level monitoring.
  3. W050 measurement range is 0.3 m to 5 m.
  4. Manufacturer specifies W050 measurement accuracy ±1% of full scale.
  5. Distance measurement resolution is 1 mm.
  6. The W050 integrated enclosure is grey ABS + PC with IP67 ingress protection.
  7. W050 operating temperature is −30°C to +65°C, different from other EM500-UDL variants.
  8. Specified relative humidity is 0% to 80%, non-condensing.
  9. Total dimensions 156.1 × 71 × 69.5 mm and OEM weight 370.4 g including battery and mounting bracket.
  10. Compatible installation includes pole, wall or DIN rail mounting.
  11. Long-range LoRaWAN® wireless communication with an internal antenna and OTAA/ABP Class A operation.
  12. Regional frequency options listed by Milesight include CN470, IN865, RU864, EU868, US915, AU915, KR920 and AS923 versions.
  13. Wireless TX power is 16 dBm at 868 MHz, 20 dBm at 915 MHz, or 19 dBm at 470 MHz, according to regional model.
  14. LoRaWAN receiver sensitivity is −137 dBm at 300 bps.
  15. Potential line-of-sight radio transmission distance up to 10 km in favorable conditions.
  16. Supports Milesight D2D Controller for compatible direct device interactions.
  17. One internal LED indicator, power/reset button and USB Type-C console are provided.
  18. Configure by Milesight mobile application via NFC, PC software via USB Type-C or remote LoRaWAN downlink.
  19. Supports up to 1,000 local records, data retransmission, data retrievability, threshold alarm and change alarm.
  20. Powered by one 19,000 mAh ER34615 lithium thionyl chloride battery, designed to be replaceable.
  21. Manufacturer states battery-life reference of 10 years at 10-minute reporting interval and 25°C in laboratory conditions.
  22. OEM lists CE, FCC, ISED, Telec and LoRaWAN certification alongside EMC, safety and RoHS claims; verify certificate scope and supplied regional hardware.
  23. India region: IN865 is offered within the EM500-UDL family; verify actual 915M radio model suitability before purchase.
  24. Main applications include non-contact tank and water-level measurement in suitable containers and outdoor monitoring sites.

Package Includes

  • 1 × Milesight EM500-UDL-915M, PN W050 Ultrasonic Distance and Level Sensor
  • Battery specification is one 19,000 mAh ER34615 Li-SOCl₂ cell; confirm whether installed in supplied product
  • Mounting bracket, screws, cable ties, accessories and other box contents are subject to supplier quotation/packing list

Frequently Asked Questions

What is the Milesight EM500-UDL-915M W050 used for?
The Milesight EM500-UDL W050 performs non-contact ultrasonic distance and level measurement from 0.3 m to 5 m. It is designed for tank or reservoir liquid-level monitoring, water-tank level monitoring and outdoor distance sensing, reporting readings through compatible LoRaWAN networks.
What are the main features of the W050 sensor?
W050 offers 0.3–5 m ultrasonic measurement, ±1% full-scale accuracy and 1 mm resolution, in a grey IP67 housing rated −30°C to +65°C. It supports LoRaWAN Class A, Milesight D2D, NFC configuration, up to 1,000 stored readings, alarms and a replaceable 19,000 mAh battery.
What specifications should I check before choosing this product?
Check the exact W050 measurement span (0.3–5 m), its minimum measuring clearance, ±1% FS accuracy, 1 mm resolution, IP67 protection, −30°C to +65°C temperature, 0–80% non-condensing RH, and mounting geometry. Confirm the radio frequency of the 915M item before Indian IN865 deployment.
How should I prepare the sensor for use?
Install it on a pole, wall or DIN rail facing the material surface or object to be measured, with a clear ultrasonic sensing path and appropriate clearance. Verify power and LoRaWAN frequency, configure using NFC mobile app, USB Type-C PC software or remote LoRaWAN downlink, and connect to a suitable gateway and network server.
What is included in the package and what is the warranty?
The listed item is one Milesight EM500-UDL-915M W050 Ultrasonic Distance and Level Sensor. It is designed to use a 19,000 mAh ER34615 Li-SOCl₂ battery; exact battery fitting and mounting accessories depend on the commercial packing list. TwoElectrons provides a one-year seller warranty against manufacturing defects, subject to its terms.

Other Information

Applications

Non-contact distance monitoring, liquid-level and water-tank-level monitoring, tank or reservoir level monitoring, and suitable outdoor IoT level-detection projects.

W050 Measurement and Clearance

The W050 measurement interval is 0.3–5 m, with ±1% full-scale accuracy and 1 mm resolution. Its 0.3 m minimum distance is an unusable near-field area for valid specified measurement. Keep mounting angle, obstructions, target surface, and environmental conditions in mind. Consult the W050 beam diagram on page 4 of the OEM datasheet for representative target testing.

Model and Frequency

TwoElectrons SKU 2ESE2178 refers to W050 with 915M suffix. The OEM lists regional LoRaWAN variants including IN865 and US915, but compatibility of the actual delivered 915M hardware with Indian IN865 must be checked before installation.

Outdoor Installation

The integrated W050 housing is IP67 and operates −30°C to +65°C at 0–80% RH, non-condensing. It measures 156.1 × 71 × 69.5 mm and allows pole, wall or DIN-rail mounting. Place the sensor facing the intended surface with a clear ultrasonic path.

LoRaWAN and Remote Configuration

LoRaWAN OTAA/ABP Class A is supported. Configure locally with NFC mobile app or USB Type-C PC software; remote settings are provided by LoRaWAN downlink through compatible gateways and servers. Milesight D2D Controller is supported.

Data History and Battery

Stores up to 1,000 readings and supports retrieval, retransmission, threshold alarms and change alarms. Powered by a replaceable 19,000 mAh ER34615 Li-SOCl₂ battery. The 10-year battery estimate is based on a 10-minute interval and 25°C laboratory conditions; field endurance may vary.

Package Includes

Listed item: one Milesight EM500-UDL-915M W050 sensor system. Verify battery insertion, mounting bracket, screws and extra accessories against the final supplier quotation; the datasheet does not give a full packing list.

Warranty Information

1-year TwoElectrons seller warranty against manufacturing defects, subject to the current warranty terms and exclusions.

Shipping & Returns Policy

Shipping, delivery, returns and replacement eligibility follow the published TwoElectrons policies and confirmed commercial order terms.

OEM Product Link

https://www.milesight.com/iot/product/lorawan-sensor/em500-udl

Source Reference

Specifications are taken from the uploaded EM500-UDL datasheet, specifically W050 values from pages 2–3, W050 beam pattern from page 4 and dimensions from page 5.

Warranty Information

1 Year Seller Warranty

This item is covered with a standard warranty of 1 year from the time of delivery against manufacturing defects only. This warranty is given for the benefit of TwoElectrons customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What Voids Warranty

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Shipping & Returns Policy

Shipping Policy:
  • In-stock items are delivered within 7-10 working days for orders within India. Delivery varies based on location and courier service.
  • In-stock items are delivered within up to 20 working days for orders outside India. Delivery varies based on location and courier service.
  • If the item is out of stock, you can still place an order. The estimated delivery time will be notified to you by email.
Return & Refund Policy:
  • Return window: 7 days from receipt unless stated otherwise.
  • No refunds or replacements after the return window.
  • Returns are accepted only for non-working or damaged products.
  • Initiate return requests from here: Return Request or contact us at 09831070550.
  • Refunds are processed within 3-4 working days after inspection and approval.
Milesight EM500-UDL-915M PN: W050 Ultrasonic Distance and Level Sensor

Main Features

  • Non-contact W050 ultrasonic distance and level measurement from 0.3 m to 5 m
  • Manufacturer-specified W050 accuracy ±1% full scale (FS), resolution 1 mm
  • Outdoor-oriented IP67 grey ABS + PC housing, −30°C to +65°C temperature
  • LoRaWAN® OTAA/ABP Class A with internal antenna
  • Milesight D2D Controller and wireless connection with compatible LoRaWAN gateways
  • Up to 10 km radio distance under ideal line-of-sight conditions
  • NFC mobile app, USB Type-C console, and LoRaWAN downlink remote configuration
  • Historical storage of 1,000 entries with data retrieval and retransmission
  • Threshold alarm and change alarm features
  • Replaceable 19,000 mAh ER34615 Li-SOCl₂ battery, 10-year OEM laboratory estimate
  • Compact 156.1 × 71 × 69.5 mm device; mounting on pole, wall or DIN rail
  • Applications include water tank levels, storage tank monitoring and outdoor distance measurement
SKU: 2ESE2178
₹ 136,843.00
For bulk orders, volume pricing & B2B enquiries, contact our team →

Lead time

QUANTITY DISPATCH
1-10 units Order from India: 7-10 working days
Order outside India: Up to 20 working days
10+ units To be negotiated
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