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. 666-6757
Mfr. Part No.ALPHA-TRX433S
TWD236.00
Each
units
Module - 433MHz FM 115.2kbit/s +25dBm - - SPI 2.2 → 3.8V 16.1 x 15.9 x 4.2mm 4.2mm 16.1mm +85 °C
RS Stock No. 762-0121
Mfr. Part No.ZULUEVAL-T
TWD4,537.00
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. 177-4868
Mfr. Part No.ERA400TS
BrandLPRS
TWD873.20
Each (In a Tray of 50)
units
Module - 433MHz 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. 672-9016
Mfr. Part No.SMARTALPHA-RX868
TWD619.00
Each
units
Module - 868MHz GFSK 86.2kbit/s 0dBm - -110dBm USB 2.3 → 3.6V - - 23.7mm +80 °C
RS Stock No. 786-3198
Mfr. Part No.PTM210
BrandEnOcean
TWD1,150.00
Each
units
Module - 868MHz ASK 125kbit/s +5dBm - - - - 40 x 40 x 11.2mm 11.2mm 40mm +65 °C
RS Stock No. 783-9628
Mfr. Part No.ERA400TS
BrandLPRS
TWD676.00
Each
units
Module - 433MHz 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. 209-6138
Mfr. Part No.LTC5507ES6#TRMPBF
TWD83.90
Each (On a Reel of 500)
units
- - - - - - - - - - - - - -
RS Stock No. 209-6139
Mfr. Part No.LTC5507ES6#TRMPBF
TWD129.40
Each (In a Pack of 5)
units
- - - - - - - - - - - - - -
RS Stock No. 783-9669
Mfr. Part No.CDT-TX-02M-R
BrandLPRS
TWD3,385.00
Each
units
Module - 434MHz - 1200bit/s 10mW - - - 3 → 12V 35 x 53 x 12mm 12mm 53mm +60 °C
RS Stock No. 189-0489
Mfr. Part No.N24RF04DWPT3G
TWD79.40
Each (In a Pack of 5)
units
Module - - - - - - - I2C 1.8 → 5.5V 5 x 4 x 1.5mm 1.5mm 5mm +105 °C
RS Stock No. 617-1811
Mfr. Part No.QAM-TX3
BrandQuasar
TWD255.00
Each
units
Module - 433.92MHz - 3000Hz +10dBm - - - 3 → 12V 5.2 x 7.08 x 1.8mm 1.8mm 7.08mm +85 °C
RS Stock No. 122-5258
Mfr. Part No.ZETA-868-D
TWD404.00
Each
units
Module - 868MHz FM 500kbit/s +13dBm - -116dBm SPI 1.8 → 3.6V 16 x 16.5 x 2mm 2mm 16.5mm +85 °C
RS Stock No. 704-3278
Mfr. Part No.RDF1
TWD647.00
Each
units
Module - 433.92MHz FM - - - -103dBm - 4.5 → 5.5V - - 50.5mm +60 °C
New
RS Stock No. 213-1335
Mfr. Part No.RockBLOCK 9603
BrandRock 7
TWD6,837.00
Each
units
- Transceiver - - 270 → 340bps - - - UART 5V 45.0 x 45.0 x 15.0mm 15mm 45mm 85 °C
RS Stock No. 146-5906
Mfr. Part No.Lazurite 920J
BrandLapis
TWD1,395.00
1 Box of 1
Box(es)
- Xbee Shield 920MHz - 100kbit/s - - - - 15V dc - - - -
RS Stock No. 206-9149
Mfr. Part No.BG96MA-MINIPCIE-S
BrandQuectel
TWD1,640.00
Each
units
- - B1/ B2/ B3/ B4/ B5/ B8/ B12/ B13/ B18/B19/ B20/ B25?/ B26*/ B28 B39 (for Cat M1 only) EGPRS: 850/900/1800/1900 MHz MHz, BeiDou/Compass MHz, Galileo MHz, GLONASS MHz, GNSS GPS MHz, QZSS MHz - - - - - UART, USB - - - - -
RS Stock No. 843-0806
Mfr. Part No.28448
TWD84.00
Each
units
Module - - - - - - - - - - - - -
RS Stock No. 505-6799
Mfr. Part No.R7G-434.525
TWD1,554.00
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. 793-1998
Mfr. Part No.RFM69W-868-S2
BrandHopeRF
TWD296.00
Each
units
Module - 868MHz FSK, GFSK, GMSK, MSK, OOK 300kbit/s +13dBm - -120dBm SPI 1.8 → 3.6V 19.7 x 16 x 1mm 1.9mm 19.7mm +70 °C
RS Stock No. 185-8654
Mfr. Part No.N24RF04DTPT3G
TWD89.80
Each (In a Pack of 5)
units
Module - - - - - - - I2C 1.8 → 5.5V 3.1 x 4.5 x 1.05mm 1.05mm 3.1mm +105 °C