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. 666-6625
Mfr. Part No.28140
MYR232.43
Each
units
Reader - - - - - - - UART 4.5 → 5.5V - - 82.5mm +85 °C
RS Stock No. 672-9053
Mfr. Part No.CARD-MIFARE4K
MYR27.76
Each
units
Module - - - - - - - - - - - - -
RS Stock No. 781-3061
Mfr. Part No.28340
MYR250.63
Each
units
Reader - - - - - - - USB - - - - -
RS Stock No. 542-517
Mfr. Part No.RWD-MIFARE-OEM
MYR462.82
Each
units
Module - - - - - - - TTL 5V - - - -
RS Stock No. 715-4078
Mfr. Part No.CARD-ICODE
MYR14.99
Each
units
Module - - - - - - - - - - - - -
RS Stock No. 657-1362
Mfr. Part No.QFM-RX1-433
BrandQuasar
MYR67.34
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. 793-1992
Mfr. Part No.RFM69HW-868-S2
BrandHopeRF
MYR48.91
Each
units
Module - 868MHz FSK, GFSK, GMSK, MSK, OOK 300kbit/s +20dBm - -120dBm SPI 1.8 → 3.6V 19.7 x 16 x 1mm 1.9mm 19.7mm +70 °C
RS Stock No. 843-0806
Mfr. Part No.28448
MYR9.95
Each
units
Module - - - - - - - - - - - - -
RS Stock No. 182-206
Mfr. Part No.TRF7960RHBT
MYR30.35
Each
units
Module - - - - 200mW - - SPI 2.7 → 5.5V 212.7 x 190.5 x 31.8mm 31.8mm 212.7mm +85 °C
RS Stock No. 145-6292
Mfr. Part No.TRF7960RHBT
MYR19.086
Each (On a Reel of 250)
units
Module - - - - 200mW - - SPI 2.7 → 5.5V 212.7 x 190.5 x 31.8mm 31.8mm 212.7mm +85 °C
RS Stock No. 793-1998
Mfr. Part No.RFM69W-868-S2
BrandHopeRF
MYR47.66
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. 170-9181
Mfr. Part No.M95FA-03-STD
BrandQuectel
MYR79.749
Each (In a Box of 25)
units
Module - 850, 900, 1800, 1900MHz - - - - - UART - 19.9 x 23.6 x 2.65mm 2.65mm 19.9mm +85 °C
RS Stock No. 793-1995
Mfr. Part No.RFM69W-433-S2
BrandHopeRF
MYR49.09
Each
units
Module - 433MHz 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. 532-4373
Mfr. Part No.ER400RS-02
BrandEasy Radio
MYR254.50
Each
units
Module - 433MHz 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
MYR100.51
Each
units
Module - 868MHz GFSK 86.2kbit/s 0dBm - -110dBm USB 2.3 → 3.6V - - 23.7mm +80 °C
RS Stock No. 617-1984
Mfr. Part No.RWD-MIFARE
MYR230.37
Each
units
Module - - - - - - - TTL 4 → 6V - - 30.5mm +85 °C
RS Stock No. 908-4120
Mfr. Part No.M95FA-03-STDN
BrandQuectel
MYR89.93
Each
units
Module - 850,900,1800,1900MHz - - - - - UART - 19.9 x 23.6 x 2.65mm 2.65mm 19.9mm +85 °C
RS Stock No. 786-3198
Mfr. Part No.PTM210
BrandEnOcean
MYR162.63
Each
units
Module - 868MHz ASK 125kbit/s +5dBm - - - - 40 x 40 x 11.2mm 11.2mm 40mm +65 °C
RS Stock No. 715-4075
Mfr. Part No.RWD-MICODE
MYR255.61
Each
units
Module - - - - - - - TTL 5V - - - -
RS Stock No. 617-1811
Mfr. Part No.QAM-TX3
BrandQuasar
MYR24.29
Each
units
Module - 433.92MHz - 3000Hz +10dBm - - - 3 → 12V 5.2 x 7.08 x 1.8mm 1.8mm 7.08mm +85 °C