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. 177-4869
Mfr. Part No.ERA900TS
BrandLPRS
MYR121.485
Each (In a Tray of 50)
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. 783-9631
Mfr. Part No.ERA900TS
BrandLPRS
MYR121.49
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. 172-2311
Mfr. Part No.CDT-TX-02M-R
BrandLPRS
MYR613.546
Each (In a Tray of 20)
units
Module - 434MHz - 1200bit/s 10mW - - - 3 → 12V 35 x 53 x 12mm 12mm 53mm +60 °C
RS Stock No. 783-9625
Mfr. Part No.ERA400TRS
BrandLPRS
MYR105.23
Each
units
Module - 433MHz ASK, FSK, GFSK 115.2kbit/s +10dBm - -117dBm RS232, UART 2.5 → 5.5V 38 x 4 x 14mm 14mm 38mm +85 °C
RS Stock No. 783-9669
Mfr. Part No.CDT-TX-02M-R
BrandLPRS
MYR525.08
Each
units
Module - 434MHz - 1200bit/s 10mW - - - 3 → 12V 35 x 53 x 12mm 12mm 53mm +60 °C
RS Stock No. 177-4868
Mfr. Part No.ERA400TS
BrandLPRS
MYR135.438
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. 136-7687
Mfr. Part No.ERA900TRS-FCC
BrandLPRS
MYR101.19
1 Box of 1
Box(es)
Module - 868 → 926MHz - - 5mW - - RS232 2.5 → 5.5V 38 x 4 x 14mm 14mm 38mm +85 °C
RS Stock No. 783-9628
Mfr. Part No.ERA400TS
BrandLPRS
MYR104.85
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. 177-4867
Mfr. Part No.ERA400TRS
BrandLPRS
MYR105.233
Each (In a Tray of 50)
units
Module - 433MHz ASK, FSK, GFSK 115.2kbit/s +10dBm - -117dBm RS232, UART 2.5 → 5.5V 38 x 4 x 14mm 14mm 38mm +85 °C