433.92MHz Low Cost FM Receiver



The WRX2 is a low cost wide band FM receiver in a Radiometrix SIL standard pin out and footprint. It offers an economical and reliable low power data link without compromising the receiver performance. WRX2 receiver and the matching TX2A transmitter enable the simple implementation of a wireless data link at up to 12 kbps at distances up to 75 metres in-building and 300 metres open ground.


  • Conforms to ETSI EN 300 220-3 (radio) and EN 301 489-3 (EMC)
  • Standard frequencies: 433.92MHz
  • Custom frequencies available in 433MHz (EU) band
  • Data rates up to 12kbps
  • Usable range over 300m


  • Handheld terminals
  • EPOS and inventory tracking
  • Sensor nodes
  • Data loggers
  • Industrial telemetry and telecommand
  • In-building environmental monitoring and control
  • High-end security and fire alarms

Technical Summary

  • Double conversion FM superhet
  • SAW band pass filter, image rejection: 45dB
  • Supply range: +3V or 2.9V - 15V (regulator version) @ 22mA
  • Data bit rate: 12kbps max.
  • Receiver sensitivity: -115dBm (for 12dB SINAD)
  • Local Oscillator (LO) re-radiation: <-65dBm
  • Adjacent Channel: -65dBm
  • Blocking: -75dB
  • Size: 47 x 17 x 6 mm (47 x 17 x 8.5mm with can)

Evaluation platforms: Universal Evaluation Kit, NBEK + SIL carrier