RF Modules

An RF module, also commonly referred to as a radio frequency module, is a small electronic device that is used to transmit and receive radio signals between two devices, and is also used in embedded systems to facilitate wireless communication connections. RS Components offer a varied range of RF modules from several brands across the industry, including Eccel Technology, ON Semiconductor, RF Solutions, Wurth Elektronik, and many more.

What is the main function of an RF module?

Radio frequency modules are the biggest facilitator of wireless communication, this is because it does not require a line of sight. This is in contrast to its usual alternative, Infrared, which mostly operates in line of sight mode. It spans between a range of 3 kHz and 300 GHz, with the lower end being applied in applications such as submarines and radio stations whilst the higher spectrum is used in applications such as GPS, Wi-Fi, Bluetooth and TV broadcasting. An RF module is typically used with a pair of encoder/decoders. The encoder is used for encoding parallel data for transmitting whilst the reception is decoded by a decoder. Some of the main functions of an RF Module are:

  • Act as a transmitter of signals
  • A solution for detecting radio signals
  • Bridging communication between two devices
  • RF can stretch communication between applications
  • Acts as a receiver module

The performance of radio frequency applications is dependent on a few factors. Through increasing a transmitter’s power, a larger communication range can be attained. This also causes a power drain from the power source which could result in a shorter life span for battery-powered devices. Through the use of higher transmitted power, interference with other radio frequencies can occur.

Typical applications of an RF module

  • Car alarm systems
  • Remote controls
  • Sensor reporting
  • Automation systems

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Description Price Component Type Module Type Supported Frequency Bands Modulation Technique Maximum RF Data Rate Maximum Output Power Mounting Type Receiver Sensitivity Supported Bus Interfaces Supply Voltage Dimensions Height Length Maximum Operating Temperature
RS Stock No. 786-3198
Mfr. Part No.PTM210
BrandEnOcean
£29.45
Each
Units
Module - 868MHz ASK 125kbit/s +5dBm - - - - 40 x 40 x 11.2mm 11.2mm 40mm +65 °C
RS Stock No. 179-1182
Mfr. Part No.USB 300
BrandEnOcean
£25.733
Each (In a Tray of 100)
Units
Module - 868MHz - 125kbit/s - - - UART, USB - 66 x 23 x 9mm 9mm 66mm +40 °C
RS Stock No. 786-3227
Mfr. Part No.USB 300
BrandEnOcean
£28.81
Each
Units
Module - 868MHz - 125kbit/s - - - UART, USB - 66 x 23 x 9mm 9mm 66mm +40 °C
RS Stock No. 786-3211
Mfr. Part No.TCM 300
BrandEnOcean
£24.16
Each
Units
Module - 868MHz ASK 125kbit/s +7dBm - -96dBm UART 2.6 → 4.5V 22 x 19 x 3.1mm 3.1mm 22mm +85 °C
RS Stock No. 179-1184
Mfr. Part No.TCM 300
BrandEnOcean
£15.20
Each (On a Reel of 250)
Units
Module - 868MHz ASK 125kbit/s +7dBm - -96dBm UART 2.6 → 4.5V 22 x 19 x 3.1mm 3.1mm 22mm +85 °C
RS Stock No. 786-3209
Mfr. Part No.STM 330
BrandEnOcean
£27.53
Each
Units
Module - 868MHz ASK 125kbit/s +8dBm - - - - 43 x 16 x 8mm 8mm 43mm +60 °C
RS Stock No. 173-2656
Mfr. Part No.STM 300
BrandEnOcean
£20.031
Each (On a Reel of 250)
Units
Module - 868MHz ASK 125kbit/s +7dBm - -96dBm SPI, USB 2.1 → 4.5V 22 x 19 x 3.1mm 3.1mm 22mm +85 °C
RS Stock No. 786-3192
Mfr. Part No.STM 300
BrandEnOcean
£18.28
Each
Units
Module - 868MHz ASK 125kbit/s +7dBm - -96dBm SPI, USB 2.1 → 4.5V 22 x 19 x 3.1mm 3.1mm 22mm +85 °C
RS Stock No. 786-3224
Mfr. Part No.TCM 320
BrandEnOcean
£25.61
Each
Units
Module - 868MHz ASK 125kbit/s +5.2dBm - -96dBm - 2.6 → 3.3V 36.5 x 18 x 5.5mm 5.5mm 36.5mm +85 °C
RS Stock No. 786-3186
Mfr. Part No.ESK 300
BrandEnOcean
£117.06
Each
Units
Module - 868MHz - 125kbit/s +3dBm - - USB - - - - +65 °C