869MHz Narrow Band FM Transmitter


The SAT3 transmitter modules offer a 10mW RF output UHF data link in Radiometrix SIL standard pin-out and footprint. This makes the SAT3 ideally suited to low power applications using narrow band transmitters. Together with the matching SAR3 receiver a one-way radio data link can be achieved over a distance up to 1km+ with suitable choice of data rate and antennas.


  • Conforms to EN 300 220-3 and EN 301 489-3
  • Standard frequency 869.2125MHz
  • 25 kHz channel spacing
  • Data rates up to 4kbps
  • Usable range over 1km+
  • Fully screened
  • Low power requirements


  • Automatic meter reading (AMR)
  • Car and building security
  • Social alarms
  • Industrial telemetry and telecommand
  • In-building environmental monitoring and control
  • EPOS and inventory tracking


Technical Summary

  • Size: 32 x 13.5 x 4.5mm
  • Operating frequency: 869.2125MHz
  • Supply range: 5v
  • Current consumption: 45mA Max
  • Data bit rate: 4kbps max.
  • Transmit power: 10dBm (10mW) nominal