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. 126-2177
Mfr. Part No.RFID-B1(000323)
£21.47
Each
Units
Module - - - - - - - UART 2.5 → 3.6V - - 20.32mm +85 °C
RS Stock No. 122-5257
Mfr. Part No.ZETA-433-D
£7.42
Each
Units
Module - 433MHz FM 500kbit/s +13dBm - -116dBm SPI 1.8 → 3.6V 16 x 16.5 x 2mm 2mm 16.5mm +85 °C
RS Stock No. 125-1246
Mfr. Part No.ZETAPLUS-868-SO
£10.38
Each
Units
Module - 868MHz FM 500kbit/s +13dBm - -116dBm Serial 1.8 → 3.6V 16 x 16.5 x 1mm 1mm 16.5mm +85 °C
RS Stock No. 111-0160
Mfr. Part No.KAPPA-M868-SO
£20.00
Each
Units
Module - 868MHz FM 57.6kbit/s +13dBm - -102dBm RS232 2.4 → 3.6V 31.5 x 11 x 2.5mm 2.5mm 31.5mm +85 °C
RS Stock No. 532-4351
Mfr. Part No.ER900TRS-02
BrandEasy Radio
£23.84
Each
Units
Module - 868 MHz, 915MHz FSK 38.4kbit/s +10dBm - -105dBm RS232 3.3 → 5.5V 38 x 4 x 14mm 14mm 38mm +85 °C
RS Stock No. 672-9016
Mfr. Part No.SMARTALPHA-RX868
£14.11
Each
Units
Module - 868MHz GFSK 86.2kbit/s 0dBm - -110dBm USB 2.3 → 3.6V - - 23.7mm +80 °C
RS Stock No. 126-2182
Mfr. Part No.OEM-MICODE-RS232 (000127)
£37.41
Each
Units
Reader - - - - - - - RS232 5V - - 75mm -
RS Stock No. 793-2008
Mfr. Part No.RFM63W-868S2
BrandHopeRF
£6.18
Each
Units
Module - 868MHz FSK, OOK 200kbit/s +10dBm - -111dBm SPI 2.1 → 3.6V 19.7 x 16 x 1mm 1.9mm 19.7mm +70 °C
RS Stock No. 126-2181
Mfr. Part No.OEM-MICODE-USB (000128)
£45.25
Each
Units
Reader - - - - - - - USB 5V - - 75mm -
RS Stock No. 505-6799
Mfr. Part No.R7G-434.525
£28.21
Each
Units
Module - 434MHz FM 20kbit/s - - -117dBm - 4.5 → 5.5V 48 x 8.3 x 17mm 17mm 48mm +55 °C
RS Stock No. 793-4408
Mfr. Part No.T9-434-525
£21.62
Each
Units
Module - 434MHz FM 57kbit/s +13dBm - -121dBm Serial 2.2 → 12V 3 x 31.5 x 10.5mm 10.5mm 31.5mm +55 °C
RS Stock No. 761-9878
Mfr. Part No.ZULU-M868
£14.67
Each
Units
Module - 868MHz FSK 256kbit/s +20dBm - -116dBm - 2.2 → 3.6V 11 x 25 x 1mm 1mm 25mm +85 °C
RS Stock No. 731-2735
Mfr. Part No.RFM31B-868-D
BrandHopeRF
£6.96
Each
Units
Module - 868MHz FSK, GFSK, OOK 256kbit/s - - -121dBm SPI 1.8 → 3.6V 14 x 15.5 x 5.9mm 5.9mm 15.5mm +85 °C
RS Stock No. 125-1244
Mfr. Part No.ZETAPLUS-433-SO
£9.91
Each
Units
Module - 433MHz FM 500kbit/s +13dBm - -116dBm Serial 1.8 → 3.6V 16 x 16.5 x 1mm 1mm 16.5mm +85 °C
RS Stock No. 412-674
Mfr. Part No.AD8361ARMZ
£7.24
Each
Units
Controller - 2.5GHz - - - Surface Mount - - - 3 x 3 x 0.85mm 0.85mm 3mm +85 °C
RS Stock No. 412-670
Mfr. Part No.AD8362ARUZ
£10.77
Each
Units
Controller - - - - - Surface Mount - - - 5 x 4.4 x 1.05mm 1.05mm 5mm +85 °C
RS Stock No. 851-6733
Mfr. Part No.LT5538IDD#PBF
£7.17
Each
Units
Controller - 3.8GHz - - - Surface Mount - - 3 → 5.25V 3 x 3 x 0.7mm 0.7mm 3mm +85 °C
RS Stock No. 783-9631
Mfr. Part No.ERA900TS
BrandLPRS
£19.31
Each
Units
Module - 868 MHz, 915MHz ASK, FSK, GFSK 38400bit/s +10dBm - -117dBm RS232, UART 2.5 → 5.5V 31 x 4 x 12mm 12mm 31mm +85 °C
RS Stock No. 762-0125
Mfr. Part No.ZULUEVAL-M
£89.28
Each
Units
Module - 868MHz FSK 256kbit/s +20dBm - -116dBm - 2.2 → 3.6V 11 x 25 x 1mm 1mm 25mm +85 °C
RS Stock No. 731-2779
Mfr. Part No.RFM02--868-S1
BrandHopeRF
£3.79
Each
Units
Module - 868MHz FSK 115.2kbit/s +8dBm - - SPI 2.2 → 5.4V 15.9 x 16.1 x 4.2mm 4.2mm 16.1mm +85 °C