RF Modules

What is a RF Module?
A 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. A 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 a 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 a 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
• Acts as a transmitter

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, an interference with other radio frequencies can occur.

Typical Applications of a RF Module
• Car alarm systems
• Remote controls
• Sensor reporting
• Automation systems

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Description Price Module Type Supported Frequency Bands Modulation Technique Maximum RF Data Rate Maximum Output Power Receiver Sensitivity Supported Bus Interfaces Supply Voltage Dimensions Height Length Maximum Operating Temperature Minimum Operating Temperature Width
RS Stock No. 125-1261
Mfr. Part No.RFM98W-433S2
$23.94
Each
units
Transceiver 433 MHz FSK, GFSK, GMSK, MSK, OOK 300kbit/s +13dBm -148dBm SPI 3.3V 16 x 16 x 1.8mm 1.8mm 16mm +70°C -20°C 16mm
RS Stock No. 666-6744
Mfr. Part No.ALPHA-TX433S
$12.03
Each
units
Transmitter 433 MHz FM 256kbit/s +7dBm -109dBm SPI 2.2 → 5.4V 16.1 x 15.9 x 4.2mm 4.2mm 16.1mm +85°C -40°C 15.9mm
RS Stock No. 125-1260
Mfr. Part No.RFM95W-915S2
$22.98
Each
units
Transceiver 915 MHz FSK, GFSK, GMSK, MSK, OOK 300kbit/s +13dBm -148dBm SPI 3.3V 16 x 16 x 1.8mm 1.8mm 16mm +70°C -20°C 16mm
RS Stock No. 125-1256
Mfr. Part No.RFM119W-433S1
$10.68
Each
units
Transmitter 433 MHz FSK - +13dBm - 2-Wire 3.6V 16 x 16 x 4.9mm 4.9mm 16mm +85°C -40°C 16mm
RS Stock No. 672-9007
Mfr. Part No.SMARTALPHA-433
$27.37
Each
units
Transceiver 433 MHz GFSK 86.2kbit/s 0dBm -110dBm USB 2.3 → 3.6V - - 23.7mm +80°C -20°C 26mm
RS Stock No. 505-6799
Mfr. Part No.R7G-434.525
$93.82
Each
units
Receiver 434 MHz FM 20kbit/s - -117dBm - 4.5 → 5.5V 48 x 8.3 x 17mm 17mm 48mm +55°C -10°C 8.3mm
RS Stock No. 122-5257
Mfr. Part No.ZETA-433-D
$17.27
Each
units
Transceiver 433 MHz FM 500kbit/s +13dBm -116dBm SPI 1.8 → 3.6V 16 x 16.5 x 2mm 2mm 16.5mm +85°C -40°C 16mm
RS Stock No. 505-6749
Mfr. Part No.R7G-434.075
$92.32
Each
units
Receiver 434 MHz FM 20kbit/s - -117dBm - 4.5 → 5.5V 48 x 8.3 x 17mm 17mm 48mm +55°C -10°C 8.3mm
RS Stock No. 125-1244
Mfr. Part No.ZETAPLUS-433-SO
$21.11
Each
units
Transceiver 433 MHz FM 500kbit/s +13dBm -116dBm Serial 1.8 → 3.6V 16 x 16.5 x 1mm 1mm 16.5mm +85°C -40°C 16mm
RS Stock No. 125-8208
Mfr. Part No.QAM-RX10-433
$4.28
Each
units
- - - - - - - 5V dc - - - - - -
RS Stock No. 125-1245
Mfr. Part No.ZETAPLUS-433-D
$27.21
Each
units
Transceiver 433 MHz FM 500kbit/s +13dBm -116dBm Serial 1.8 → 3.6V 16 x 16.5 x 1mm 1mm 16.5mm +85°C -40°C 16mm
RS Stock No. 666-6757
Mfr. Part No.ALPHA-TRX433S
$20.87
Each
units
Transceiver 433 MHz FM 115.2kbit/s +25dBm - SPI 2.2 → 3.8V 16.1 x 15.9 x 4.2mm 4.2mm 16.1mm +85°C -40°C 15.9mm
RS Stock No. 793-4408
Mfr. Part No.T9-434-525
$31.86
Each
units
Transmitter 434 MHz FM 57kbit/s +13dBm -121dBm Serial 2.2 → 12V 3 x 31.5 x 10.5mm 10.5mm 31.5mm +55°C -10°C 3mm
RS Stock No. 793-4395
Mfr. Part No.T9-434-075
$31.86
Each
units
Transmitter 434 MHz FM 57kbit/s +13dBm -121dBm Serial 2.2 → 12V 3 x 31.5 x 10.5mm 10.5mm 31.5mm +55°C -10°C 3mm
RS Stock No. 505-6761
Mfr. Part No.R7G-434.225
$87.70
Each
units
Receiver 434 MHz FM 20kbit/s - -117dBm - 4.5 → 5.5V 48 x 8.3 x 17mm 17mm 48mm +55°C -10°C 8.3mm
RS Stock No. 704-3278
Mfr. Part No.RDF1
$36.31
Each
units
Receiver 433.92 MHz FM - - -103dBm - 4.5 → 5.5V - - 50.5mm +60°C 0°C 18.5mm
RS Stock No. 793-4405
Mfr. Part No.T9-434-225
$56.91
Each
units
Transmitter 434 MHz FM 57kbit/s +13dBm -121dBm Serial 2.2 → 12V 3 x 31.5 x 10.5mm 10.5mm 31.5mm +55°C -10°C 3mm