UHF FM Data Transmitter


The TX3A & RX3A are miniature UHF radio transmitter & receiver modules designed for PCB mounting. They facilitate the simple implementation of data links at speeds up to 64kbps and distances.. Available for operation in the 868-870MHz band in Europe and the 902-928MHz band in North America, both modules combine full screening with internal filtering to ensure EMC compliance by minimising spurious radiation and susceptibility.

Download Product Spec


Typical features include:

  • Frequencies available as standard: 869.85MHz, 914.5MHz
  • CE certified by independent Notified Body
  • Verified to comply with Radio standard EN 300 220-3 by accredited Test Laboratory
  • Verified to comply with EMC standard EN 301 489-3 by accredited Test Laboratory
  • North American version conforms to FCC part 15.249
  • Data rates up to 64kbps
  • Fully screened

Transmitter – TX3A

  • Crystal-locked PLL, FM modulated at up to 64 kb/s
  • Operation from 2.2V to 16V @ 7.5mA
  • Built-in regulator for improved stability and supply noise rejection
  • 0dBm (1mW) nominal RF output
  • Enable facility
  • Update of the original TX3A with enhanced performance


  • Handheld terminals
  • EPOS and inventory tracking
  • Remote industrial process monitoring
  • Data loggers
  • Industrial telemetry and telecommand
  • In-building environmental monitoring and control
  • Vehicle and building security and fire alarms
  • Vehicle data up/download

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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