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RN2903A-I/RM103

MCHPRN2903A-I/RM103

Microchip Technology
Sub-GHz Modules LoRa Transceiver Module 915MHz
NRND14,521 in stock
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Overview

The RN2903A-I/RM103 is a fully certified 915 MHz LoRa technology transceiver module designed for long-range wireless data transmission in North America. It features an integrated LoRaWAN protocol stack and is controlled via a simple ASCII command interface over UART, significantly reducing development time. The module operates from 2.1V to 3.6V and provides high sensitivity of -146dBm for robust communication in challenging environments.

Why Choose This Part

This module stands out due to its modular FCC/IC certifications and an on-board EUI-64 node identity, which simplifies regulatory compliance and network registration. The low sleep current of 1.3uA and high receiver sensitivity make it excellent for battery-powered endpoints requiring years of operational life. Its simple ASCII UART interface allows engineers to add LoRaWAN connectivity to any microcontroller without needing to port complex radio stacks.

Applications

Smart Agriculture
Ideal for soil moisture sensors and livestock tracking across large rural areas where cellular coverage is unavailable.
Remote Utility Metering
Enables automatic meter reading for water and gas utilities through dense urban structures or underground pits.
Industrial Asset Tracking
Used in large-scale warehouses or shipyards to monitor the location and status of equipment without high power consumption.
Smart City Infrastructure
Facilitates street lighting control and waste management sensor networks covering entire municipal districts.

Key Specifications

Protocol LoRa
Data Rate 300kbps
Frequency 902MHz ~ 928MHz
Modulation FSK, GFSK
Sensitivity -146dBm
Antenna Type Antenna Not Included, Castellation
Mounting Type Surface Mount
Package / Case Module
Power - Output 18.5dBm
Voltage - Supply 2.1V ~ 3.6V
Serial Interfaces UART
RF Family/Standard General ISM < 1GHz
Operating Temperature -40degC ~ 85degC

Getting Started

Engineers can evaluate the module using the RN-2903-PICTAIL development board, which plugs directly into a PC or Microchip Explorer suites. Communication is established via a standard UART interface at 57600 bps using simple AT-style commands for configuration and data transmission. For firmware updates, the module supports Device Firmware Upgrade (DFU) over UART.

RN2903A-I/ Family

Part NumberDifferenceStock
RN2903A-I/RMSA103 SA103 1,391

Also Consider

SX1276 Semtech Corporation - A discrete transceiver IC for designs where the engineer prefers to implement their own LoRaWAN stack and optimize the PCB footprint.