Flexible Data Communications Assemblies for the Natural Gas Industry

The MiWireless 350 product line provides a platform based comprehensive selection of communication hardware and power supply systems, optimized to integrate with the Honeywell Mercury® precision measurement instruments.

The MiWireless 350 platform leverages the latest innovations in battery operated instruments such as the EC 350 and ERX 350, and low power 4G cellular radios such as Cloud Link R100 or Cloud Link with Cat M1 radio support.

The MiWireless 350 products can be used as:

  • Pressure Monitor in the gas transmission and distribution lines
  • Electronic Volume Correction in demanding custody transfer applications,
  • Communication assemblies in Hazardous locations
  • Power assemblies for remote equipment


  • 4G Cat 3 Cellular radios
  • 4G Cat M1 Low Power Cellular radios
  • Internal Antennas
  • Modem Power Control
  • Voltage Monitoring
  • 22Ah Battery
  • Digital Plug and Play Pressure transducer
  • Easy to maintain/ troubleshoot
  • CSA C/US Class-I, Div-2

MiWireless 350 Specifications

Technical Data
Environmental Conditions
Temperature: -40°C to +70°C (exact range depends on power supply selected)
Humidity: 0%-95% RH, non-condensing
14.92 in x 7.01 in x 16.71 in (excluding mounting accessories)
Cellular Modems Supported
Cloud Link R100 : Cat 3 radio
CloudLink R110 : Low Power Cat M1 radio
Sierra Wireless RV50/RV50X modems
Power Supply Options
7Ah Alkaline rechargeable sealed battery
22Ah Alkaline rechargeable sealed battery
120Vac/12-15Vdc adjustable power supply
10W, 20W, 30W, 40W or 90W solar panel
Alkaline receptacle (backup power for Volume Corrector/ Pressure Recorder)
Up to 3 pressures
Up to 1 Temperature (2 future)
Up to 4 Digital Inputs
RS232/485 port
RS232 Configuration port
IrDA configuration interface
Magnetic switch: wakes the unit up by swiping a magnet and forces a call
Mounting Configuration
Wall Mount
U-Bolt Mount (2”, 3”, 4”)
UMB Mount
Portable Mount
Metrological: Measurement Canada (pending)
Hazardous Locations: CSA C/US Class I, Division 2, Groups C and D, T3C
Hazardous Locations: IECEc Class I, Zone 2 Group IIB and IIA
Wireless Certification: Industry Canada : IC ICES-003
Wireless Certification: FCC: Part 15 B Class-A Digital divide
4 year standard warranty