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. 657-1362
Mfr. Part No.QFM-RX1-433
BrandQuasar
SGD23.29
Each
units
Module - 433MHz FM 4800bit/s - - -106dBm - 4.5 → 5.5V 13 x 44.2 x 5.5mm 5.5mm 44.2mm +85 °C
RS Stock No. 126-2179
Mfr. Part No.RWD-QT-LP-SMT (000327)
SGD39.67
Each
units
Module - - - - - - - RS232, SPI, TTL 5V - - 17.4mm +85 °C
New
RS Stock No. 209-6122
Mfr. Part No.LT5534ESC6#TRMPBF
SGD12.956
Each (On a Reel of 500)
units
- - - - - - - - - - - - - -
RS Stock No. 185-8027
Mfr. Part No.N24RF04DTPT3G
SGD1.72
Each (On a Reel of 3000)
units
Module - - - - - - - I2C 1.8 → 5.5V 3.1 x 4.5 x 1.05mm 1.05mm 3.1mm +105 °C
RS Stock No. 666-6625
Mfr. Part No.28140
SGD77.81
Each
units
Reader - - - - - - - UART 4.5 → 5.5V - - 82.5mm +85 °C
New
RS Stock No. 209-6139
Mfr. Part No.LTC5507ES6#TRMPBF
SGD5.842
Each (In a Pack of 5)
units
- - - - - - - - - - - - - -
RS Stock No. 200-7271
Mfr. Part No.NC1000C-8
BrandNeoCortec
SGD16.59
Each
units
- - - - - - - - - - - - - -
RS Stock No. 731-2779
Mfr. Part No.RFM02--868-S1
BrandHopeRF
SGD7.63
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
RS Stock No. 731-2735
Mfr. Part No.RFM31B-868-D
BrandHopeRF
SGD14.02
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. 189-0216
Mfr. Part No.N24RF04DWPT3G
SGD1.71
Each (On a Reel of 3000)
units
Module - - - - - - - I2C 1.8 → 5.5V 5 x 4 x 1.5mm 1.5mm 5mm +105 °C
RS Stock No. 189-0341
Mfr. Part No.N24RF16EDTPT3G
SGD4.368
Each (In a Pack of 5)
units
Module - - - - - - - I2C 1.8 → 5.5V 3.10 x 4.50 x 1.05mm 1.05mm 3.1mm +105 °C
RS Stock No. 887-7211
Mfr. Part No.MRF89XAM8A-I/RM
BrandMicrochip
SGD11.949
Each (In a Tray of 54)
units
Module - - FSK, OOK - - - - - - 27.94 x 17.78 x 1.91mm 1.91mm 27.94mm +85 °C
RS Stock No. 783-9669
Mfr. Part No.CDT-TX-02M-R
BrandLPRS
SGD155.27
Each
units
Module - 434MHz - 1200bit/s 10mW - - - 3 → 12V 35 x 53 x 12mm 12mm 53mm +60 °C
RS Stock No. 126-2176
Mfr. Part No.RFID-A1 (00319)
SGD41.95
Each
units
Module - - - - - - - I2C, SPI 2.5 → 3.6V - - 20.32mm +85 °C
RS Stock No. 125-1257
Mfr. Part No.RFM119W-868S1
SGD9.39
Each
units
Module - 868MHz FSK - +13dBm - - 2-Wire 3.6V 16 x 16 x 4.9mm 4.9mm 16mm +85 °C
RS Stock No. 206-9160
Mfr. Part No.EM12GPA-512-SGAS
BrandQuectel
SGD386.69
Each
units
- - B1+B3/B5/B18/B19/B20/B26 MHz, B1/B2/B3/B4/B5/B7/B8/B9/B12/B13/B14/B17/B18/B19/B20/B21/B25/B26/B28/ B294)/B30/B324)/B66 MHz, B12+B25/B30 MHz, B13+B66 MHz, B14+B30/B66 MHz, B19+B21 MHz, B2+B2 MHz, B2+B4/B5/B12/B13/B14/B17/B29/B30/B66 MHz, B20+B32 MHz, B25+B25 MHz, B25+B26/B41 MHz, B29+B30 MHz, B3+B3 MHz, B3+B5/B7/B8/B19/B20/B28 MHz, B38+B38 MHz, B38/B39/B40/B41 MHz, B39+B39 MHz, B39+B41 MHz, B4+B4 MHz, B4+B5/B12/B13/B17/B29/B30 MHz, B40+B40 MHz, B41+B41 MHz, B5+B7/B25/B30/B66 MHz, B66+B12/B29/B30 MHz, B66+B66 MHz, B7+B20/B28 MHz, B7+B7 MHz - - - - - - - - - - -
RS Stock No. 206-9144
Mfr. Part No.BC95-GJB_02_STD
BrandQuectel
SGD24.00
Each
units
- - 700/ 800/ 850/ 900/ 1800/ 2100MHz - - - - - Serial - - - - -
RS Stock No. 206-9142
Mfr. Part No.BC66NB-04-STD
BrandQuectel
SGD24.00
Each
units
- - B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26*/B28/B66/B71/B85MHz - - - - - Serial - - - - -
RS Stock No. 206-9150
Mfr. Part No.EC21EFA-512-STD
BrandQuectel
SGD112.57
Each
units
- - B1/B3/B5/B7/B8/B20MHz - - - - - USB 2.0 - - - - -
RS Stock No. 793-2008
Mfr. Part No.RFM63W-868S2
BrandHopeRF
SGD12.45
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