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Milesight VO-EM300-DI Pulse Meter

Milesight VO-EM300-DI, the LoRaWAN pulse counter for water meters, measures pulses, temperature and humidity, 1 meter connection cable, battery-powered for approximately 5 years, extendable to 10 years, NFC 

The Milesight VO-EM300-DI is a LoRaWAN pulse counter. It connects directly to a standard water meter and measures pulses, temperature, and humidity. It is used for remote reading of water meter data, helping to increase water use efficiency. Interference signals are automatically filtered out. The device can be configured as needed to adjust measurement accuracy.

The Milesight VO-EM300-DI operates entirely on battery power and requires very little energy. With one battery, it achieves a lifespan of approximately five years with 12 readings per day. With a second battery, the service life extends to around ten years. Configuration is conveniently done via an app using NFC directly with a smartphone. The sensor includes a 1-meter connection cable. Its IP67-rated weatherproof housing allows for both indoor and outdoor use.

The Milesight VO-EM300-DI features an integrated buffer that stores up to 1000 data records. If the connection to the web server is interrupted, the data is synchronized afterward to prevent any data loss. The strong building penetration of the LoRaWAN protocol also enables reception in basements. The sensor comes with mounting accessories and is ready for immediate use. With Milesight Cloud, you can view all meter readings online and set up notifications if required.

The Milesight VO-EM300-DI is the ideal solution for wireless meter reading and water consumption monitoring. It combines precise pulse measurement with temperature and humidity sensing in a compact, weatherproof housing. The battery life of up to ten years ensures minimal maintenance. NFC configuration makes setup particularly easy.

Why the Milesight VO-EM300-DI is the best pulse counter:

  • LoRaWAN pulse counter for water meters
  • Measures pulses, temperature, and humidity
  • 1 meter connection cable
  • Battery operation approximately 5 years with one battery
  • Extendable to about 10 years with a second battery
  • NFC configuration via smartphone app
  • Weatherproof with protection rating IP67
  • Integrated buffer for 1000 data records
  • Interference signals are automatically filtered
  • Includes mounting accessories

Technical Data:

  • LoRaWAN pulse counter
  • Connection to water meters
  • Measures pulses, temperature, and humidity
  • 1 meter connection cable
  • Battery operation approximately 5 years with one battery
  • Extendable to 10 years with a second battery
  • NFC configuration with mobile app
  • Protection rating IP67
  • Buffer for 1000 data records
  • Dimensions 85.2 × 105.6 × 27 millimeters
Datasheets
Datasheet 1

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Datasheet 1 (233.22 KB)

Milesight VO-EM300-DI

Wireless Transmission

  • Technology: LoRaWAN®, Milesight D2D
  • Antenna: Internal
  • Frequency: CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
  • Transmit Power: 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
  • Sensitivity: -137 dBm @ 300 bps
  • Mode: OTAA / ABP Class A

Measurement

GPIO

  • Connection: 1 × GPIO interface, dry contact
  • Operating Mode: Pulse counter, digital input
  • Input Frequency: ≤ 2000 Hz
  • Minimum Pulse Width: 250 μs
  • Cable Length: 1 m (customizable)
  • Wire Connection: 3.5 mm
  • Applicable Meters: Reed switch or other passive pulse meters

Temperature

  • Range: -30°C to +70°C
  • Accuracy: 0°C to +70°C (±0.3°C), -30°C to 0°C (±0.6°C)
  • Resolution: 0.1°C

Humidity

  • Range: 0% to 100% RH
  • Accuracy: 10% to 90% RH (±3%), below 10% and above 90% RH (±5%)
  • Resolution: 0.5% RH

Operation & Display

  • LED: 1 × internal indicator
  • Button: 1 × Power/Reset (internal)

Software & Functions

  • Power On/Off: NFC or power button
  • Configuration: Mobile app via NFC, downlink
  • Advanced Functions:
    • Milesight D2D Controller
    • Data storage (1,000 entries)
    • Data transmission & recovery
    • Temperature threshold alarms
    • Water flow/failure alarms

Power Supply

  • Battery: 1 × 4000 mAh ER18505 Li-SOCl₂ (Optional: 8000 mAh)
  • Battery Life: approx. 5 years (10-minute interval, 25 °C)

Environmental Conditions

  • Operating Temperature: -30°C to +70°C
  • Relative Humidity: ≤95% (non-condensing)
  • Protection Rating: IP67

Enclosure & Mounting

  • Material & Color: ABS + PC (flame retardant), white
  • Dimensions: 105.6 × 85.2 × 27 mm (W × H × D)
  • Weight: 114.2 g (with battery & cable)
  • Mounting: Wall, 3M adhesive tape, or cable ties

Certifications

  • Regulatory: CE, FCC, ISED, RCM, Telec
  • Environmental: RoHS compliant

Manufacturer Information:

XIAMEN MILESIGHT IOT CO., LTD.

401, Building No. 37, Xixishanwei Road
Software Park Phase III

Torch Development Zone for High Technology Industries
Xiamen, China

Phone: +86-592-5922772

Email: sales@milesight.com

Responsible person:

Didactum® Security GmbH

Im Mühlenfeld 4

48163 Münster
Deutschland

Fon: (+49) 2501 92 90 160 oder (+49) 171 33 11 577

Email: info@didactum-security.de

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