ESP32‑S3 LoRa Development Board with LR1121 3rd Generation RF Chip USB Stamp Hole

ESP32‑S3 LoRa Development Board with LR1121 3rd Generation RF Chip USB Stamp Hole

$17.9

Brand：SpotPear

SKU：020812600000

Date：2026-03-10 16:47

Part Number：

ESP32-S3-LR1121-HF【No Adapter board No FPC】 ESP32-S3-LR1121-LF【No Adapter board No FPC】 ESP32-S3-LR1121-HF-Kit【With Adapter board With FPC】 ESP32-S3-LR1121-LF-Kit【With Adapter board With FPC】

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ESP32-S3 LoRa Development Board, Integrates LR1121 Third-generation RF Chip, Supports Sub-GHz/2.4GHz LoRa Wireless Communication

ESP32-S3 LoRa Development Board

Integrates the LR1121 Third-generation RF Chip, Options for LF/HF frequency band

Version Options

HF version, 850 ~ 930MHz frequency

Applicable to Europe, North America and Oceania

LF version, 410 ~ 510MHz frequency

Applicable to Europe, Asia

Supports LoRa 2.4G for global wireless connectivity with extended range and lower power consumption.
Please select the frequency version according to the local radio regulations before placing order.

Board Specifications

Equipped with high-performance Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency
Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) to meet diverse wireless needs
Built in 512KB Static RAM and 384KB ROM, with onboard 4MB Flash and 2MB PSRAM
Castellated module allows soldering direct to carrier boards
Onboard rich peripheral interfaces including 4 × SPI, 2 × I2C, 3 × UART, 2 × I2S, and 2 × ADC, etc.
Based on the third-generation low-power LoRa transceiver LR1121
Supports Sub-GHz (150MHz ~ 960MHz), S-band (1.9GHz ~ 2.1GHz), and 2.4GHz ISM frequency bands
Connects to the cloud via LoRa or LoRaWAN protocol through a gateway, enabling low-power wide-area networking (LPWAN)
Supports LoRa, (G)FSK, and LR-FHSS modulation schemes, compatible with SX126X/SX127X series for easy product upgrades
Integrates AES-128 encryption engine to enhance data security
Onboard TCXO crystal oscillator ensures frequency stability under extreme temperature conditions
Suitable for IoT applications such as industrial telemetry, smart home, environmental monitoring, and remote data acquisition
Comes with online resources and manual (example in C) for easy development and rapid application

Product Specifications

VERSION	ESP32-S3-LR1121-LF	ESP32-S3-LR1121-HF
RF CHIP	LR1121
FREQUENCY RANGE	LF: 410 ~ 510MHz	HF: 850 ~ 930MHz
FREQUENCY RANGE	2000MHz ~ 2500MHz
EMITTING POWER	-9dBm ~ 22dBm at Sub-GHz band -18dBm ~ 13dBm at ISM band
EMITTING CURRENT	87.7mA at 22dBm 52.7mA at 13dBm	111.2mA at 22dBm 49.6mA at 13dBm
MODULATION	LoRa / (G)FSK / LR-FHSS
ANTENNA PROTECTION	TVS protection
CONNECTOR	castellated edge / solder holes, pitch 2.54mm
DATA RATE	LoRa: 0.091Kbps ~ 62.5Kbps (G)FSK: 0.6Kbps ~ 300Kbps
TYPICAL RANGE	Sub-GHz band: 5KM ISM band: 2KM
SPREADIND FACTOR	SF5 ~ SF12
RECEIVER SENSITIVITY	-127dBm at Sub-GHz band, SF=7, CR4_5, BWL=125KHz -111dBm at ISM band, SF=7, CR4_5, BWL=800KHz
ANTENNA INTERFACE	IPEX-1 connector
OPERATING TEMPERATURE	-40℃ ~ 85℃
DIMENSIONS	21.00 × 41.00 (mm)

Supports C/C++

Comprehensive SDK, Dev Resources, Tutorials To Help You Easily Get Started

Compact Size, Separate Adapter Board Design

Castellated Holes With Immersion Gold Design, Highly Integrated Packaging. Adapting USB Type-C Port Via Adapter Board, Easy To Embed Into Various Product Applications

Based On ESP32-S3, Designed
For AIoT Market

Equipped With Xtensa 32-Bit LX7 Dual-Core Processor, Capable Of Running At 240 MHz, With Powerful AI Computing Performance And Security Encryption Mechanism

21 × Multi-Function GPIO Pins

The ESP32 Series Allows Flexible Mapping Of Peripheral Signals Such As UART, SPI, I2C, And PWM To Almost Any GPIO Pin Via The GPIO Matrix

Comes With LoRa Antenna

Connecting With The Antenna Via Onboard IPEX Connector

Application Examples

Combined with Meshtastic to enable Mesh networking communication
between multiple devices without an Internet connection'

Industrial environment, smart home and data acquisition

Outline Dimensions

[] ESP32-S3-LR1121-HF

[] ESP32-S3-LR1121-LF

[] ESP32-S3-LR1121-HF-Kit

[] ESP32-S3-LR1121-LF-Kit

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!