LoRa Wireless RF Transceiver Modules

REYAX RYLR896 868/915MHz Module

The REYAX RYLR896 LoRa module is a radio transceiver designed to work in the 868/915MHz ISMIndustrial, Scientific, and Medical radio bands band with a typical range of 4.5km and max range of 15km. The board has a size of 25mm x 17mm (0.98in x 0.67in ) that contains a Semtech SX1276 RFRadio Frequency Engine and a STM32L151C8 ARM Cortex-M3 32-bit MCUMicrocontroller Unit.

Data interfacing and control are performed by ATShort text string commands where the AT stands for ATtention and every command line starts with "AT" or "at". commands through 2-wire UARTUniversal Asynchronous Receiver-Transmitter (RXDReceive Data, TXDTransmit Data). The interface pins for power, data, and reset are breadboard friendly with 2.54mm (0.1in) spacing. The power and logic are 3.3V with a supply ranging from 2V to 3.6V DC and up to 43mA max transmitting current.

This module comes with a spring antenna, but also has pads on the back of the board for soldering a uFL/IPEX connector for an external antenna. The radio frequency can be selected from 862MHz to 1020MHz, transmitting power is programmable from -4dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale. (0.4mW) to +15dBm (31.6mW), and receiving sensitivity goes down to -148dBm.

Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2 byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

REYAX RYLR406 433MHz Module

The REYAX RYLR406 LoRa module is a radio transceiver designed to work in the 433MHz ISMIndustrial, Scientific, and Medical radio bands band with a typical range of 4.5km and max range of 15km. The board has a size of 25mm x 17mm (0.98in x 0.67in ) that contains a Semtech SX1276 RFRadio Frequency Engine and a STM32L151C8 ARM Cortex-M3 32-bit MCUMicrocontroller Unit.

Data interfacing and control are performed by ATShort text string commands where the AT stands for ATtention and every command line starts with "AT" or "at". commands through 2-wire UARTUniversal Asynchronous Receiver-Transmitter (RXDReceive Data, TXDTransmit Data). The interface pins for power, data, and reset are breadboard friendly with 2.54mm (0.1in) spacing. The power and logic are 3.3V with a supply ranging from 2V to 3.6V DC and up to 43mA max transmitting current.

This module comes with a spring antenna, but also has pads on the back of the board for soldering a uFL/IPEX connector for an external antenna. The radio frequency can be selected from 390MHz to 525MHz, transmitting power is programmable from -4dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale. (0.4mW) to +15dBm (31.6mW), and receiving sensitivity goes down to -148dBm.

Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2 byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

REYAX RYLR998 868/915MHz Module

The LoRa REYAX RYLR998 module is a radio transceiver designed to work in the 868/915MHz ISMIndustrial, Scientific, and Medical radio bands band with a frequency range between 820MHz to 960MHz. This module has a typical range of 10km and a max range of 20km with a programmable RF power output up to +22dBm (158.5mW), spread spectrum communication, and high interference immunity.

Transmission communication is half-duplex and supports FSKFrequency-Shift Keying modulation, GFSKGaussian Frequency-Shift Keying modulation, MSKMinimum-Shift Keying modulation, GMSKGaussian Minimum-Shift Keying modulation, OOKOn-Off Keying modulation and LoRa® modulations. Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, and a 2-byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

The board has a Semtech LLCC68 RF Engine and a NUVOTON M031FB0AE ARM Cortex-M0 32-bit MCUMicrocontroller Unit where data interfacing and control is performed by ATShort text string commands where the AT stands for ATtention and every command line starts with "AT" or "at". commands through 2-wire UARTUniversal Asynchronous Receiver-Transmitter (RXDReceive Data, TXDTransmit Data). Data baud rates are selectable from 300bps to 115,200bps. The module is powered from 1.8V to 3.6V DC with a max 140mA transmit current, 17.5mA receive current, and 15μA sleep current.

REYAX RYLR498 433MHz Module

The REYAX RYLR498 LoRa module is a radio transceiver designed to work in the 433MHz ISMIndustrial, Scientific, and Medical radio bands band with a typical range of 10km and max range of 20km. The board has a size of 14.6mm x 14mm (0.58in x 0.55in) that contains a Semtech LLCC68 RF Engine and a NUVOTON M031FB0AE Arm Cortex-M0 32-bit MCUMicrocontroller Unit.

Data interfacing and control are performed by ATShort text string commands where the AT stands for ATtention and every command line starts with "AT" or "at". commands through 2-wire UARTUniversal Asynchronous Receiver-Transmitter (RXDReceive Data, TXDTransmit Data). The interface pins for power, data, and reset are breadboard friendly with 2.54mm (0.1in) spacing. The power and logic are 3.3V with a supply ranging from 1.8V to 3.6V DC and up to 140mA max transmitting current.

This module comes with a spring antenna, but also has a uFL/IPEX connector on the back of the board for an external antenna. The radio frequency can be selected from 410MHz to 525MHz, transmitting power is programmable from -20dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale. (0.01mW) to +22dBm (158.5mW), and receiving sensitivity goes down to -129dBm.

Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2 byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

HopeRF RFM95W 868/915MHz Module

The LoRa HopeRF RFM95W module is a radio transceiver designed to work in the 868/915MHz ISMIndustrial, Scientific, and Medical radio bands band with a frequency between 862MHz to 1020MHz. The range of this module depends on the antenna used (purchased separately), but can reach around 2km with a simple wire antenna and up to 15km with better antennas that have a higher gain. It has a programmable RF power output up to +20dBm (100mW) and a receiving sensitivity down to -144dBm at 49kbps.

Transmission communication is half-duplex and supports FSKFrequency-Shift Keying modulation, GFSKGaussian Frequency-Shift Keying modulation, MSKMinimum-Shift Keying modulation, GMSKGaussian Minimum-Shift Keying modulation, OOKOn-Off Keying modulation, and LoRaLoRa (short for Long Range) is a spread spectrum modulation technique derived from Chirp Spread Spectrum (CSS) technology. modulations. Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2-byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

The RF Engine is a Semtech SX1276 IC where data interfacing and control is performed by 4-Wire SPISerial Peripheral Interface (SCK, MISO, MOSI, CS) with selectable data rates from 1MHz to 10MHz, plus a reset line and interrupt line. The module is powered from 1.8V to 3.6V DC with a max 120mA transmit current, 10.3mA receive current, and 15μA sleep current.

HopeRF RFM96W 433MHz Module

The LoRa HopeRF RFM96W module is a radio transceiver designed to work in the 433MHz ISMIndustrial, Scientific, and Medical radio bands band with a frequency between 410MHz to 525MHz. The range of this module depends on the antenna used (purchased separately), but can reach around 2km with a simple wire antenna and up to 15km with better antennas that have a higher gain. It has a programmable RF power output up to +20dBm (100mW) and a receiving sensitivity down to -144dBm at 49kbps.

Transmission communication is half-duplex and supports FSKFrequency-Shift Keying modulation, GFSKGaussian Frequency-Shift Keying modulation, MSKMinimum-Shift Keying modulation, GMSKGaussian Minimum-Shift Keying modulation, OOKOn-Off Keying modulation, and LoRaLoRa (short for Long Range) is a spread spectrum modulation technique derived from Chirp Spread Spectrum (CSS) technology. modulations. Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2-byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

The RF Engine is a Semtech SX1276 IC where data interfacing and control is performed by 4-Wire SPISerial Peripheral Interface (SCK, MISO, MOSI, CS) with selectable data rates from 1MHz to 10MHz, plus a reset line and interrupt line. The module is powered from 1.8V to 3.6V DC with a max 120mA transmit current, 10.3mA receive current, and 15μA sleep current.

Adafruit RFM95W 868/915MHz Module

The Adafruit RFM95W 868/915MHz LoRa RF transceiver board (PID 3073) breaks out the 2.0mm pin spacing RFM96W to 2.54mm (0.1in) breadboard spacing, includes an LDOLow Dropout Regulator Linear Regulator that allows an operating with a wider supply voltage between 3.3V to 6V DC, and a 74HC4050D data level shifter IC to communicate with 3.3V or 5V devices.

As of January 28, 2020, an update to this version of the breakout was made by adding protective metal tin on the RFM95W module in order to shield it from EMIElectromagnetic Interference and keep it safer from environmental elements. It works just the same and has the same hardware layout, software, and pinout. Adafruit sells the upgraded version of this module, but there are still modules on the market offered by resellers that are the older version without protective metal tin.

This module is designed to work in the 868MHz or 915MHz ISMIndustrial, Scientific, and Medical radio bands frequency bands between 862MHz and 1020MHz. The range of this module depends on the antenna used (purchased separately), but can reach around 2km with a simple wire antenna and up to 15km with better antennas that have a higher gain. It has a programmable RF power output up to +20dBm (100mW) and a receiving sensitivity down to -144dBm at 49kbps, with a power consumption of 120mA max transmitting current at +20dBm and 30mA receiving current.

Transmission communication is half-duplex and supports FSKFrequency-Shift Keying modulation, GFSKGaussian Frequency-Shift Keying modulation, MSKMinimum-Shift Keying modulation, GMSKGaussian Minimum-Shift Keying modulation, OOKOn-Off Keying modulation, and LoRaLoRa (short for Long Range) is a spread spectrum modulation technique derived from Chirp Spread Spectrum (CSS) technology. modulations. Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2-byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

The RF Engine is a Semtech SX1276 IC where data interfacing and control is performed by 4-Wire SPISerial Peripheral Interface (SCK, MISO, MOSI, CS) with selectable data rates from 1MHz to 10MHz, plus a reset line and interrupt line. The SX1276 also has a built-in temperature sensor and low battery indicator.

This board also features a PCBPrinted Circuit Board spot with the option to solder on a uFL or SMASubMiniature version A (SMA) connector antenna connector or a simple wire antenna. The range of these modules can go up to 2km line-of-sight using simple wire antennas, where higher ranges can be achieved by using a better antenna or by lowering the data bit rate.

Adafruit RFM96W 433MHz Module

The Adafruit RFM96W 433MHz LoRa RF transceiver board (PID 3073) breaks out the 2.0mm pin spacing RFM96W to 2.54mm (0.1in) breadboard spacing, includes an LDOLow Dropout Regulator Linear Regulator that allows an operating with a wider supply voltage between 3.3V to 6V DC, and a 74HC4050D data level shifter IC to communicate with 3.3V or 5V devices. This module is designed to work in the 433MHz ISMIndustrial, Scientific, and Medical radio bands frequency band between 410MHz and 525MHz.

As of July 29, 2020, an update to this version of the breakout was made by adding protective metal tin on the RFM96W module in order to shield it from EMIElectromagnetic Interference and keep it safer from environmental elements. It works just the same and has the same hardware layout, software, and pinout. Adafruit sells the upgraded version of this module, but there are still modules on the market offered by resellers that are the older version without protective metal tin.

The range of this module depends on the antenna used (purchased separately), but can reach around 2km with a simple wire antenna and up to 15km with better antennas that have a higher gain. It has a programmable RF power output up to +20dBm (100mW) and a receiving sensitivity down to -144dBm at 49kbps, with a power consumption of 120mA max transmitting current at +20dBm and 30mA receiving current.

Transmission communication is half-duplex and supports FSKFrequency-Shift Keying modulation, GFSKGaussian Frequency-Shift Keying modulation, MSKMinimum-Shift Keying modulation, GMSKGaussian Minimum-Shift Keying modulation, OOKOn-Off Keying modulation, and LoRaLoRa (short for Long Range) is a spread spectrum modulation technique derived from Chirp Spread Spectrum (CSS) technology. modulations. Data is transmitted in packets with a payload message up to 255 bytes in length, AES-128AES-128 is a variant of the Advanced Encryption Standard (AES) block cipher, specified with a key size of 128 bits, a fixed block size of 128 bits, and 10 transformation rounds that convert the input (plaintext) into the final output (ciphertext). data encryption, 2-byte CRCCyclic Redundancy Check checksum for message error detection, and can communicate with up to 255 modules on the same network that share the same network ID.

The RF Engine is a Semtech SX1276 IC where data interfacing and control is performed by 4-Wire SPISerial Peripheral Interface (SCK, MISO, MOSI, CS) with selectable data rates from 1MHz to 10MHz, plus a reset line and interrupt line. The SX1276 also has a built-in temperature sensor and low battery indicator.

This board also features a PCBPrinted Circuit Board spot with the option to solder on a uFL or SMASubMiniature version A (SMA) connector antenna connector or a simple wire antenna. The range of these modules can go up to 2km line-of-sight using simple wire antennas, where higher ranges can be achieved by using a better antenna or by lowering the data bit rate.

Arduino

There are several RFM95W & RFM96W Arduino libraries available, such as AirSpayce's Radiohead Library, Jan Gromes RadioLib (GitHub Code), and Sandeep Mistry's Arduino LoRa, which also supports many other radios.

CircuitPython

Adafruit's CircuitPython RFM9x Library available on GitHub can be used with either Adafruit's or HopeRF's RFM95W and RFM96W modules. There is also a usage guide for this library available on Adafruit's website and documentation. CircuitPython was designed to be beginner friendly but has some limitations, where interrupts and threading are are not supported, so if these features are needed you can use the MicroPython libraries given below.

MicroPython

LeMaRiva|tech has created the uPyLoRaWAN MicroPython library available on GitHub with a blog explaining how to use it with different microcontrollers. The u-lora MicroPython library on GitHub by Martyn Wheeler is another option specifically for the RFM95W & RFM96W modules.