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Milesight EM500-UDL - Ultrasonic Distance Sensor

Original price £405.00 - Original price £445.00
Original price
£405.00 - £445.00
Current price £405.00
SKU EM500-UDL-868M PN:W050

Ultrasonic distance sensor, perfect for river level monitoring, flood detection and any application where measuring levels is a requirement.

Ultrasonic sensors can also be used for fill-level monitoring of silos and tanks.

Rated to IP66 and UV and water resistant, perfect for use in harsh environments, but equally suitable for indoor use.

Built-in 19,000mAh battery boasting a 10-year battery life. The device is a LoRaWAN IoT sensor with a range of up to 10KM in optimal conditions.

Product details
  • Distance/Level monitoring using an ultrasonic sensor
  • LoRaWAN Radio
  • EU868MHz (For UK/EU markets)
  • Tx Power: 16dBm(868)/20dBm(915)/19dBm(470)
  • Sensitivity: -147dBm @ 300bps
  • Mode: OTAA/ABP Class A
  • Other frequencies available (CN470/RU864/IN865/EU868/US915/AU915/KR920/AS923)


  • Battery: 1 x 19,000mAh Li-SOCL2 battery
  • Battery-Life: 4 years (10min interval SF12), 10 years (10 min interval SF7)
  • Operating temperature: -30°C to +70°C
  • Dimensions (node): 147.9 × 71 × 69.5 mm (5.8 × 2.8 × 2.7 in)
  • Dimensions (sensor): 88 × 68 × 26 mm (3.5 × 2.7 × 1.0 in)
  • Probe: 50mm/1.97 in
  • Installation: Pole, wall or DIN mounting
  • Protection: IP66
  • NFC support and USB Type-C port for programming

Sensor specification

There are two models available, one with a measurement range of [0.3 - 5m] and the second [0.5m - 10m].

Distance sensor

  • Range: 0.3m - 5m, 0.5m - 10m
  • Accuracy: ±1% FS
  • Resolution: 1mm


  • River level monitoring
  • Snow level monitoring
  • Grain silo monitoring
  • Reservoir/lake levels
  • Ocean/Sea levels
  • Water tank monitoring
  • Agricultural trough level monitoring


The sensors use a LoRaWAN radio network so you need to ensure your building is covered by a LoRaWAN network. MTG also sell LoRaWAN gateways here, or you can talk to us about our LoRaWAN network services.


Using the Milesight IoT Cloud solution, users can view and manage sensor data, create riggers and receive alerts/notifications by e-mail and a mobile app.