Bi-directional Low Power RF Remote Control Application Boards

These simple application boards use firmware based on the BD118 remote control systems to implement a bi-directional control link. A system consists of a master board (which initiates communication burst cycles) and a slave (which responds to them). In hardware terms these boards are the same, but have different firmware loaded.



  • 8 bit address select switch
  • A relay to control mains powered devices rated up to 8A, 240VAC
  • Visual LED indication of communication status and relay state
  • Useful for RF module range testing
  • Logic or Switch input for momentary control of relay
  • Very low (1mA) average current. 2 years operating life from D cells
  • Simple plug-and-play setup. No complex programming needed.


  • Security and Alarm systems
  • Emergency assistance call system
  • Status reporting and monitoring systems
  • RF Remote control systems
  • Industrial controls
  • HVAC controls
  • Simple On/Off switching
  • Long range telecontrol with Narrow Band FM radios

Kit Contents

The BL118 Application kit is supplied with the following contents:

1 BL118 Encoder/Decoder Master board

1 BL118 Encoder/Decoder Slave board

2 Radiometrix Transceiver module(ordered separately)

2 1/4-wavelength monopole or helical antennas.

Additional requirement

External power supply (12V and 5V version available)

Related Products

  1. BD118 – remote control systems to implement a bi-directional control link.
  2. CTA App. Boards – simple encoder/decoder for use with ISM band telemetry modules.
  3. CTA88– 8 bit address, 8 bit data encoder and decoder combined in a single IC
  4. The CTA88 – Remote Control Application Board

Downloads & Datasheets

  1. Full Specs PDF


    Control44 Evaluation Kit


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    Control44 Evaluation Kit


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    Code-hopping decoder with 4 outputs


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    8 bit Address - 8 bit Data encoder/decoder


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    Bi-directional RF Remote Control application boards