Radio Packet Modem


The UHF Radio Packet Modem (RPM3) is a low cost intelligent radio packet modem that enables a two way radio network/link to be simply implemented between a number of digital devices.

Download Product Spec



  • Addressable point-to-point mode
  • Point-to-Multipoint and broadcast modes
  • Inverted RS232 interface at 5V or 3V CMOS level
  • DTE speed 600-115200bps
  • Overall throughput: 17kbps with ACK and28kbps wothout ACK
  • Single 5V or 3V supply
  • 15mA during data streaming at maximum rate
  • Flow control – Hardware (CTS), none
  • Available in 869.85MHz (EU), 914.50MHz (North America)
  • Usable range up to 200m (650ft.)
  • No Duty Cycle Restriction
  • Built-in command line configuration
  • Built-in RF link diagnostics
  • Remote over-air unit configuration
  • Low operating current, Auto standby mode
  • Conforms to European ETSI EN 300 220-3 and EN 301 489-3
  • FCC approved (under part 15.249)
  • Dimensions – 39 X 23 X 10 mm


  • Telemetry and telecontrol
  • EPOS equipment, barcode scanners, belt clip printers, stock control, job allocation
  • Remote data acquisition system, data loggers
  • In-building environmental monitoring and control system
  • High-end security and alarm signalling
  • Automated Monitoring and Control Systems
  • Fleet management, vehicle data acquisition

Please Note Disclaimer:

Lemos International does not assume any responsibility for errors nor any liability arising from the application or use of any sub-assemblies purchased through Lemos International, including fitness for any particular application.

The purchaser must satisfy all relevant FCC and Radio Regulations which applies to their finished product in the country of intended use. These modules transmit and/or receive radio signals and may not function as intended if interference is present.

Downloads & Datasheets

  1. Full Specs PDF




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