Flexible Data Communications Assemblies for the Natural Gas Industry

The MiWireless ERX 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 ERX 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 ERX 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 ERX 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