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DISCONTINUED. The ModHopper wireless meter transceiver from Obvius provides a self-optimizing wireless mesh network between multiple meters, perfect for submetering commercial and industrial facilities.

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ModHopper R9120-3 and R9120-3T

The ModHopper is a breakthrough mesh technology design that makes connecting Modbus and pulse devices simple and cost effective. Our “smart” ModHopper transceivers eliminate the need for costly wiring runs allowing users to capture meter data in the most challenging retrofit environments. Collect meter points in existing buildings with minimum down-time or disruption of day-to-day operations.

Wireless Metering

Obvius developed a wireless Modbus/Pulse transceiver to capture remote meter points. Our high-powered radios allow you to easily collect meter data from multiple buildings over long distances. Our unique “mesh” technology provides optimized routing of communications with no PC or software configuration, meaning the ModHopper works immediately “out of the box.” This self-managed mesh network means that the system will function with high reliability where other wireless systems fail due to short- or long-term interference. ModHoppers can be used with any Modbus master such as a PLC or gateway making them an ideal solution for any project. Ask us about options for 256Bit AES encryption, international frequencies and extended range models.


The ModHopper is compatible with virtually any Modbus RTU device, allowing customers the flexibility to use the ModHopper in existing Modbus applications. The ModHopper is a “smart” device, which requires no programming. If used with the Obvius AcquiSuite, users can take advantage of numerous diagnostic tools, including a graphical display of the wireless mesh network.


  • Utility submetering (electric, gas, water, etc.)
  • Metering in existing buildings (retrofit)
  • Metering on campus environments
  • Government advanced metering projects
  • Multi-tenant submetering projects
  • Industrial / Manufacturing facilities
  • Demand Response
  • Renewable Energy – PV projects (inverters, string monitoring)

Best Practices

Features and Benefits
  • Designed specifically for wireless metering
  • No software or programming required
  • Devices automatically configure when powered
  • Wireless “mesh” network—self-healing, self-optimizing
  • Frequency hopping, spread spectrum (FHSS)
  • Connect up to 32 Modbus and 2 pulse devices per ModHopper (expandable)
  • Long distance communication (1500ft indoor / 7 miles LOS)
  • Visual display of signal strength (LEDs)
  • Multiple independent network capability
  • Reliable, constant two-way communication and packet verification
  • Point to multi-point communication
  • Field upgradable firmware