HopeRF RFM95W 868/915MHz LoRa Module Products

Description

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 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. 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 RF 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. 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.

Specs

HopeRF RFM95W Module Specs
Parameter	Description
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.
Range	Depends on the antenna used (purchased separately) Around 2km with a simple wire antenna Up to 15km with high gain antennas
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 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	1.8V to 3.7V DC for +17dBm 2.4V to 3.7V DC for +20dBm
Transmission Current	120mA @ +20dBm 87mA @ +17dB 29mA @ +13dBm 20mA @ +7dBm
Receiving Current	10.3mA
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
Pin Spacing	2mm (0.079in)
Board Size (LxW)	16mm x 16mm (0.63in x 0.63in)