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RFM95W-868S2

RFM95W-868S2

RF Solutions
Sub-GHz Modules Lora TRX module +20dBm/-139dBM 300Kbps
235 in stock

Overview

The RFM95W-868S2 is a high-performance LoRa transceiver module designed for long-range wireless communication in the 868MHz band. It utilizes the Semtech SX1276 core to provide exceptional receiver sensitivity and integrated +20dBm power amplification, enabling robust links even in challenging RF environments. With its low 0.2uA sleep current and 1.8V to 3.7V operating range, it is optimized for battery-powered IoT edge devices.

Why Choose This Part

The module offers a superior link budget with -123dBm sensitivity and high interference immunity via LoRa spread-spectrum modulation. Its compact 16x16mm SMD form factor and 5V tolerant I/O pins simplify integration with a wide variety of microcontrollers. Engineers benefit from significantly reduced power consumption during idle states, extending the life of remote deployments.

Applications

Smart Agriculture
Long-range sensor nodes for monitoring soil moisture and environmental conditions across large farms.
Automated Meter Reading
Utility meters that transmit data from deep indoor or underground locations to a central gateway.
Industrial Asset Tracking
Monitoring the location and status of equipment within large manufacturing facilities or ports.
Smart City Infrastructure
Connecting street lighting, parking sensors, and waste management systems over a wide urban area.

Key Specifications

Protocol LoRa
Data Rate 300kbps
Frequency 868MHz
Modulation FSK, GFSK, GMSK, MSK, OOK
Sensitivity -123dBm
Antenna Type Antenna Not Included
Mounting Type Surface Mount
Package / Case 16-SMD Module
Power - Output 17dBm
Voltage - Supply 1.8V ~ 3.7V
Serial Interfaces SPI
RF Family/Standard General ISM < 1GHz
Current - Receiving 10.8mA ~ 12.1mA
Operating Temperature -20degC ~ 70degC
Current - Transmitting 20mA ~ 120mA

Getting Started

Integration is typically handled via an SPI interface and basic GPIOs for interrupts (DIO pins) and reset. For prototyping, the module is widely supported by the RadioHead and LMIC libraries for Arduino and Mbed environments. Ensure a proper 868MHz antenna is connected to the ANT pin before powering the module to avoid damaging the output stage.

Also Consider

SX1276 Semtech - The raw IC used inside the RFM95W, suitable for high-volume custom PCB designs where space is at a premium.