Milesight EM500-UDL Ultrasonic Sensor

The Milesight EM500-UDL Ultrasonic Distance Sensor is designed for objects distance or level detection in harsh environments and transmitting data using LoRaWAN technology. With its low power consumption technology, EM500-UDL can work up to 10 years with it's 19000mAh battery.

The EM500-UDL is widely used for outdoor applications including flood monitoring and granary level monitoring.


  • Object distance or level detection without touch
  • Ultra-wide-distance data transmission up to 10km, line of sight
  • IP67 waterproof enclosure for harsh environment applications
  • Replaceable 19000 mAh battery built-in, for upto 10 years
  • Equipped with NFC for easy configuration
  • Compliant with standard LoRaWAN gateways and network servers


Physical Characteristics
Dimensions70 mm (w) x 70 mm (d) x 156 mm (h)
InstallationPole, Wall or DIN Rail Mounting
Environmental Characteristics
Operating TemperatureW050/W100/S050: -30șC to +65șC
C050/C100: -15șC to +60șC
Relative Humidity0% to 80% (non-condensing)
Ingress ProtectionIP67
Battery19000 mAh Li-SOCL2 battery (ER34615)
Battery LifeUpto 10 years (At a 10 minute read interval)
Power On/OffNFC with APP, or Internal Power Button
Sensor Characteristics
Range and AccuracyW050: 0.3 - 5 m, ±1% FS
W100: 0.5 - 10 m, ±1% FS
S050: 0.3 - 5 m (Snow Version), ±1% FS
C050: 0.25 - 5 m, ± (1+0.3%*S) cm, S=distance
C100: 0.25 - 8 m, ± (1+0.3%*S) cm, S=distance
Wireless Characteristics
Tx Power16dBm(868)/20dBm(915)/19dBm(470)
Sensitivity137dBm @300bps
ModeOTAA/ABP Class A
Configuration Interface
NFCPower On/Off, configure with Mobile App
USBInternal USB-C Connector with PC Software
RegulatoryCE, FCC, RoHS, LoRaWAN Certified
EMCEN 55032, EN 55035
EMSIEC 61000-4-2 Level 3, IEC 61000-4-3 Level 2, IEC 61000-4-8 Level 4
Radio FrequencyFCC Part 15B, FCC Part 15.247, EN 300 330, EN 301 489-1/3, EN 300 220-1/2

Ordering Information and Pricing
Part Number Model Number Description RRP
[A] Milesight EM500-UDL Ultrasonic Sensor
EM500-UDL-915M-W050 EM500-UDL-W050 LoRaWAN Ultrasonic Sensor (IP67), 0.3 to 5m +/-1% FS $924.00 C3
EM500-UDL-915M-W100 EM500-UDL-W100 LoRaWAN Ultrasonic Sensor (IP67), 0.5 to 10m +/-1% FS $979.00 C3
EM500-UDL-915M-C050 EM500-UDL-C050 LoRaWAN Ultrasonic Sensor (IP67), 0.25 to 5m $539.00 C3
EM500-UDL-915M-C100 EM500-UDL-C100 LoRaWAN Ultrasonic Sensor (IP67), 0..25 to 8m $539.00 C3