UHF Narrow Band FM Transmitter

The NTX2B transmitter and NRX2B receiver offer a low power, reliable data link in a Radiometrix SIL standard pin out and foot print.



  • Conforms to ETSI EN 300 220-3 (radio) and EN 301 489-3 (EMC)
  • Standard frequencies – 434.075MHz, 434.650MHz and 458.700MHz
  • Factory programmable custom frequency (425 – 480MHz). No crystal lead-times
  • Custom frequencies available in 433MHz (EU) and 458MHz (UK) band
  • Data rates up to 10kbps
  • Usable range over 500m
  • 12.5kHz / 20kHz / 25kHz Channel spacing (factory set)
  • Feature-rich interface (true analogue and/or digital baseband) and RSSI
  • Longer range compared to Wide Band FM modules


  • EPOS equipment, barcode scanners
  • Data loggers
  • Industrial telemetry and telecommand
  • In-building environmental monitoring and control
  • High-end security and fire alarms
  • DGPS systems
  • Vehicle data up/download

Technical Summary

  • Fully integrated sigma-delta PLL synthesizer based design
  • SAW band pass filter, image rejection: 50dB
  • Supply range: 2.9V – 15V @ 14mA (internal 2.8V voltage regulator)
  • Data bit rate: 10kbps max.
  • Receiver sensitivity: -118dBm (for 12dB SINAD) / -112dBm (for 1ppm BER)

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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