Adafruit RFM95W 868/915MHz LoRa Module Products

Description

The Adafruit 3072 RFM95W 868/915MHz LoRa RF transceiver board 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 ICIntegrated Circuit to communicate with 3.3V or 5V devices. 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. The board has 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. It has a programmable RFRadio Frequency power output up to +20dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale. (100mW) and a receiving sensitivity down to -144dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale. at 49kbpskilobits per second, 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, AESAdvanced Encryption Standard (AES) is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001. It was developed an alternative to the Data Encryption Standard (DES), which was starting to become vulnerable to brute-force attacks.-128 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 RFRadio Frequency Engine is a Semtech SX1276 ICIntegrated Circuit where data interfacing and control is performed by 4-Wire SPISerial Peripheral Interface (SCKSerial Clock line, MISOMaster In Slave Out (MISO) is the SPI data output line from the slave device, MOSIMaster Out Slave In (MOSI) is the SPI data output line from the master device, CSChip Select (CS) is the SPI output line from the master device to indicate that data is being sent. Also referred to as CSN or Slave Select (SS).) 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.

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.

Adafruit RFM95W 868/915MHz LoRa Module with Protective Metal Tin

Adafruit RFM95W 868/915MHz LoRa Module without Protective Metal Tin

Specs

Adafruit RFM95W Module Specs
Parameter	Description
Module Info	Adafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit Product ID 3072 Product Page Adafruit Tutorial
RF Module Info	HopeRF RFM95W 868/915MHz Product Page Datasheet PDF
RF Engine	SX1276 by Semtech Product Page Datasheet PDF
Frequency	868/915MHz (862MHz min, 1020MHz max) ISMIndustrial, Scientific, and Medical radio bands band
Modulation	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.
Air Data Rate (bpsbits per second)	Configurable FSKFrequency-Shift Keying modulation Bit rates up to 300 kbps LoRaLoRa (short for Long Range) is a spread spectrum modulation technique derived from Chirp Spread Spectrum (CSS) technology. Bit rates up to 37.5kbps
Receiving Sensitivity (dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale.)	Down to -144dBm @ 49kbps
Transmitting Power (dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale.)	Programmable between -4dBm min and +20dBm max
I/O Data Interface	SPISerial Peripheral Interface: SCKSerial Clock line, MISOMaster In Slave Out (MISO) is the SPI data output line from the slave device, MOSIMaster Out Slave In (MOSI) is the SPI data output line from the master device, CSChip Select (CS) is the SPI output line from the master device to indicate that data is being sent. Also referred to as CSN or Slave Select (SS). (3.3V or 5V tolerant) RST Reset (3.3V or 5V tolerant) G0 interrupt (3.3V or 5V tolerant) 6 Digital I/O Pins G0-G5 (3.3V logic)
Data Level Shifter IC	TI 74HC4050D (Datasheet PDF)
Data Packets	Network ID Address (Node ID) Message Payload with AESAdvanced Encryption Standard (AES) is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001. It was developed an alternative to the Data Encryption Standard (DES), which was starting to become vulnerable to brute-force attacks.-128 encryption Optional 2-bytes CRCCyclic Redundancy Check checksum
Operating Supply Voltage	3.3V to 6V DC
Supply Voltage Regulator IC	AP2112k-3.3 LDOLow Dropout Regulator Linear Regulator (Datasheet PDF) Output: 3.3V 600mA (min) Input: 2.5V to 6.0V max Package: SOT-25
Transmission Current	120mA @ +20dBm
Receiving Current	30mA
Networking	Supports multipoint networks with individual node addresses. Up to 256 networks Up to 255 nodes per network
Operating Temperature	-20°C to +70°C
Board Size (LxWxH)	29mm x 25mm x 4mm (1.14in x 1.0in x 0.2in)