RF Modules

An RF Module is commonly referred to as a “radio frequency” module, it is a small electronic device that is used to transmit and receive radio signals between two devices. An RF Module is usually 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.

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. 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

Did you know

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. 170-9181
Mfr. Part No.M95FA-03-STD
BrandQuectel
SGD21.645
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. 908-4120
Mfr. Part No.M95FA-03-STDN
BrandQuectel
SGD23.69
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. 793-2018
Mfr. Part No.RFM65W-868-S2
BrandHopeRF
SGD12.10
Each
units
Module - 868MHz FSK, GFSK, GMSK, MSK, OOK 300kbit/s - - -120dBm SPI 1.8 → 3.6V 19.7 x 16 x 1mm 1.9mm 19.7mm +70 °C
RS Stock No. 715-4078
Mfr. Part No.CARD-ICODE
SGD4.07
Each
units
Module - - - - - - - - - - - - -
RS Stock No. 908-4161
Mfr. Part No.UG96LATEA-128-STD
BrandQuectel
SGD87.93
Each
units
Module - - - - - - - I2C, NETLIGHT, PCM, UART - 22.5 x 26.5 x 2.2mm 2.2mm 22.5mm +85 °C
RS Stock No. 851-6733
Mfr. Part No.LT5538IDD#PBF
SGD17.01
Each
units
Controller - 3.8GHz - - - Surface Mount - - 3 → 5.25V 3 x 3 x 0.7mm 0.7mm 3mm +85 °C
RS Stock No. 532-4367
Mfr. Part No.ER400TS-02
BrandEasy Radio
SGD35.61
Each
units
Module - 433MHz FSK 38.4kbit/s +10dBm - - RS232 3.3 → 5.5V 38 x 4 x 14mm 14mm 38mm +85 °C
RS Stock No. 786-3198
Mfr. Part No.PTM210
BrandEnOcean
SGD50.48
Each
units
Module - 868MHz ASK 125kbit/s +5dBm - - - - 40 x 40 x 11.2mm 11.2mm 40mm +65 °C
RS Stock No. 146-0765
Mfr. Part No.UG96LATEA-128-STD
BrandQuectel
SGD87.779
Each (In a Box of 10)
units
Module - - - - - - - I2C, NETLIGHT, PCM, UART - 22.5 x 26.5 x 2.2mm 2.2mm 22.5mm +85 °C
RS Stock No. 617-1811
Mfr. Part No.QAM-TX3
BrandQuasar
SGD7.19
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. 617-1984
Mfr. Part No.RWD-MIFARE
SGD58.54
Each
units
Module - - - - - - - TTL 4 → 6V - - 30.5mm +85 °C
RS Stock No. 793-1992
Mfr. Part No.RFM69HW-868-S2
BrandHopeRF
SGD13.23
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. 666-6757
Mfr. Part No.ALPHA-TRX433S
SGD12.94
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. 672-9000
Mfr. Part No.ALPHA-RX868S
SGD6.31
Each
units
Module - 868MHz FM 256kbit/s - - - SPI 2.2 → 5.4V 16.1 x 15.9 x 4.2mm 4.2mm 15.9mm +85 °C
RS Stock No. 793-2024
Mfr. Part No.RFM68W-868-S2
BrandHopeRF
SGD6.60
Each
units
Module - 868MHz FSK, OOK 100kbit/s +10dBm - - TWI 1.8 → 3.7V 15 x 14.5 x 1mm 1.7mm 15mm +70 °C
RS Stock No. 617-2000
Mfr. Part No.RWD-QT
SGD31.87
Each
units
Module - - - - - - - TTL 5V - - 30.5mm +85 °C
RS Stock No. 921-3016
Mfr. Part No.RF-HDT-DVBE-N2
SGD1.829
Each (On a Reel of 1000)
units
Transponder - - - - - - - - - - 3mm - +90 °C
RS Stock No. 412-670
Mfr. Part No.AD8362ARUZ
SGD20.28
Each
units
Controller - - - - - Surface Mount - - - 5 x 4.4 x 1.05mm 1.05mm 5mm +85 °C
RS Stock No. 825-3353
Mfr. Part No.RF-HDT-DVBE-N2
SGD3.044
Each (In a Pack of 5)
units
Transponder - - - - - - - - - - 3mm - +90 °C
RS Stock No. 843-0806
Mfr. Part No.28448
SGD3.20
Each
units
Module - - - - - - - - - - - - -