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. 122-5257
Mfr. Part No.ZETA-433-D
SGD18.29
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. 126-2181
Mfr. Part No.OEM-MICODE-USB (000128)
SGD89.35
Each
units
Reader - - - - - - - USB 5V - - 75mm -
New
RS Stock No. 213-1335
Mfr. Part No.RockBLOCK 9603
BrandRock 7
SGD315.58
Each
units
- Transceiver - - 270 → 340bps - - - UART 5V 45.0 x 45.0 x 15.0mm 15mm 45mm 85 °C
RS Stock No. 505-6749
Mfr. Part No.R7G-434.075
SGD73.01
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. 187-1558
Mfr. Part No.ATSAMR34J18B-I/7JX
BrandMicrochip
SGD9.339
Each (In a Tray of 429)
units
Transceiver - 137 → 175 MHz, 410 → 525 MHz, 862 → 1020MHz - 12Mbit/s 20dBm - -148dBm USB 1.8 → 3.6V - - 6mm +85 °C
RS Stock No. 111-0160
Mfr. Part No.KAPPA-M868-SO
SGD29.03
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
New
RS Stock No. 206-9169
Mfr. Part No.UG95EB-128-STD
BrandQuectel
SGD72.69
Each
units
- - 900/ 2100MHz - - - - - USB - - - - -
RS Stock No. 126-2182
Mfr. Part No.OEM-MICODE-RS232 (000127)
SGD71.71
Each
units
Reader - - - - - - - RS232 5V - - 75mm -
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. 125-1246
Mfr. Part No.ZETAPLUS-868-SO
SGD20.69
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. 126-2179
Mfr. Part No.RWD-QT-LP-SMT (000327)
SGD38.91
Each
units
Module - - - - - - - RS232, SPI, TTL 5V - - 17.4mm +85 °C
RS Stock No. 185-8654
Mfr. Part No.N24RF04DTPT3G
SGD4.044
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
New
RS Stock No. 206-9145
Mfr. Part No.BG95M3LA-64-SGNS
BrandQuectel
SGD45.11
Each
units
- - 850/ 900/ 1800/ 1900MHz - - - - - USB 2.0 - - - - -
RS Stock No. 185-8029
Mfr. Part No.N24RF64DTPT3G
SGD1.98
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. 505-6761
Mfr. Part No.R7G-434.225
SGD65.35
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. 793-2005
Mfr. Part No.RFM64W-433S2
BrandHopeRF
SGD13.35
Each
units
Module - 433MHz FSK, OOK 150kbit/s +10dBm - -110dBm SPI 1.8 → 3.6V 19.7 x 16 x 1mm 1.9mm 19.7mm +70 °C
RS Stock No. 189-0222
Mfr. Part No.N24RF64EDWPT3G
SGD2.164
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. 783-9631
Mfr. Part No.ERA900TS
BrandLPRS
SGD38.72
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. 203-3646
Mfr. Part No.6GT2600-4AH00
BrandSiemens
SGD20.825
Each (In a Pack of 50)
units
Transponder - - - - - - - - - - - - -
RS Stock No. 162-4453
Mfr. Part No.Chilli-USB-B1 (000373)
SGD59.43
Each
units
Reader - - - - - - - AES-128, UART, USB 4.5 → 5.5V - - 75mm +85 °C