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. 903-3059
Mfr. Part No.RF-LORA-868-SO
HK$170.13
Each
units
Transceiver 868 MHz FM, FSK, GFSK, GMSK, MSK, OOK 300kbit/s +20dBm -130dBm - 1.8 → 3.6V 19.95 x 23 x 1mm 1mm 23mm +85°C -40°C 19.95mm
RS Stock No. 742-4481
Mfr. Part No.QAM-RX1-433
BrandQuasar
HK$60.29
Each
units
Receiver 433 MHz AM 1kbit/s - -112dBm - 3.3V - - 16.8mm +85°C -40°C 12.5mm
RS Stock No. 731-2735
Mfr. Part No.RFM31B-868-D
BrandHopeRF
HK$65.82
Each
units
Receiver 868 MHz FSK, GFSK, OOK 256kbit/s - -121dBm SPI 1.8 → 3.6V 14 x 15.5 x 5.9mm 5.9mm 15.5mm +85°C -40°C 14mm
RS Stock No. 783-9669
Mfr. Part No.CDT-TX-02M-R
BrandLPRS
HK$808.07
Each
units
Transmitter 434 MHz MSK 1200bit/s 10mW - - 3 → 12V 35 x 53 x 12mm 12mm 53mm +60°C -20°C 35mm
RS Stock No. 172-2311
Mfr. Part No.CDT-TX-02M-R
BrandLPRS
HK$1,025.95
Each (In a Tray of 20)
units
Transmitter 434 MHz MSK 1200bit/s 10mW - - 3 → 12V 35 x 53 x 12mm 12mm 53mm +60°C -20°C 35mm
RS Stock No. 133-759
Mfr. Part No.ER400TRS-02
BrandLPRS
HK$227.76
Each
units
Transceiver 433 MHz FSK 38.4kbit/s +10dBm -105dBm RS232 3.3 → 5.5V 38 x 4 x 14mm 14mm 38mm +85°C -40°C 4mm
RS Stock No. 903-3034
Mfr. Part No.GAMMA-868-SO
HK$226.11
Each
units
Transceiver 868 MHz FM 9.6kbit/s +20dBm -137dBm RS232 1.8 → 3.6V - - - +85°C -40°C -
RS Stock No. 666-6757
Mfr. Part No.ALPHA-TRX433S
HK$66.62
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. 731-2732
Mfr. Part No.RFM22B-868-S1
BrandHopeRF
HK$89.10
Each
units
Transceiver 868 MHz FSK, GFSK, OOK 256kbit/s +20dBm -121dBm SPI 1.8 → 3.6V 16 x 16 x 4.9mm 4.9mm 16mm +85°C -40°C 16mm
RS Stock No. 762-0121
Mfr. Part No.ZULUEVAL-T
HK$958.00
Each
units
Transceiver 868 MHz FSK 256kbit/s +20dBm -116dBm - 2.2 → 3.6V 11 x 25 x 1mm 1mm 25mm +85°C -40°C 11mm
RS Stock No. 903-3030
Mfr. Part No.GAMMA-868
HK$255.16
Each
units
Transceiver 868 MHz FM 9.6kbit/s +20dBm -137dBm RS232 1.8 → 3.6V - - - +85°C -40°C -
RS Stock No. 704-3278
Mfr. Part No.RDF1
HK$184.88
Each
units
Receiver 433.92 MHz FM - - -103dBm - 4.5 → 5.5V - - 50.5mm +60°C 0°C 18.5mm
RS Stock No. 783-9631
Mfr. Part No.ERA900TS
BrandLPRS
HK$179.78
Each
units
Transmitter 868 MHz, 915 MHz ASK, FSK, GFSK 38400bit/s +10dBm -117dBm RS232, UART 2.5 → 5.5V 31 x 4 x 12mm 12mm 31mm +85°C -40°C 4mm
RS Stock No. 505-6799
Mfr. Part No.R7G-434.525
HK$393.36
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. 145-2336
Mfr. Part No.BP35C2
BrandROHM
HK$1,284.72
Each
units
Wireless 922.5 → 927.9 MHz - - 20mW -103dBm USB - 49.7 x 21.4 x 8.5mm 8.5mm 49.7mm +50°C -20°C 21.4mm
RS Stock No. 793-2027
Mfr. Part No.RFM67W-868-S2
BrandHopeRF
HK$44.46
Each
units
Transmitter 868 MHz FSK, GFSK, GMSK, MSK, OOK 600kbit/s +17dBm - SPI 1.8 → 3.7V 19.7 x 16 x 1mm 1.9mm 19.7mm +70°C -20°C 16mm
New
RS Stock No. 192-6586
Mfr. Part No.ZULU2-T868-SO
HK$116.60
Each
units
- 868 MHz - - - -121dBm - 2.4 → 3.6V 25 x 11 x 1mm 1mm 25mm +85°C -40°C 11mm
RS Stock No. 181-2484
Mfr. Part No.LAMBDA80C-24S
HK$112.93
Each
units
Transceiver 2.4 GHz - 2.02 (FSK) Mbit/s, 476 (LoRa) bit/s 12.5dBm -132dBm SPI 1.8 → 3.7V 19.95 x 26.95 x 2mm 2mm 19.95mm +85°C -40°C 26.95mm
RS Stock No. 181-2485
Mfr. Part No.LAMBDA80C-24D
HK$122.50
Each
units
Transceiver 2.4 GHz - 2.02 (FSK) Mbit/s, 476 (LoRa) bit/s 12.5dBm -132dBm SPI 1.8 → 3.7V 19.95 x 26.95 x 2.93mm 2.93mm 19.95mm +85°C -40°C 26.95mm
RS Stock No. 171-3740
Mfr. Part No.eRIC-LoRa
BrandLPRS
HK$179.70
Each
units
Transceiver 868 MHz FSK, GFSK, OOK 115.2 (Host) kbit/s, 300 (Over Air) kbit/s +7dBm -137 (SF12 Maximum) dBm, -122 (SF6 Minimum) dBm RS232, UART 2.4 → 6V 15.24 x 20.32 x 2mm 2mm 15.24mm +85°C -40°C 20.32mm
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