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Core1121 LF Dual-Band LoRa Module, Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31902)

Core1121 LF Dual-Band LoRa Module, Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31902)

Name: Core1121 LF Dual-Band LoRa Module, Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31902)
Brand: Waveshare Electronics
SKU: WS-31902
Price: 13.41 EUR
Availability: PreOrder

Kód WS-31902

13,41 €

10.90 € bez DPH

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Core1121 LF Dual-Band LoRa Module, Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31902)

Part No.: Core1121-LF-M
Version : Core1121-LF
with pre-soldered header

Core1121 LF/HF Dual-Band LoRa Module, Based on Low-Power LR1121 Transceiver, Suitable For Sub-GHz And 2.4GHz Frequency Bands

Core1121 Dual-Band LoRa Module

Suitable For Sub-GHz And 2.4GHz Frequency Bands

Version Options

HF version, 850 ~ 930MHz frequency

Applicable to Europe, North America and Oceania

Core1121-HF
Standard version

Core1121-HF-M
with pre-soldered header

LF version, 410 ~ 510MHz frequency

Applicable to Europe, Asia

Core1121-LF
Standard version

Core1121-LF-M
with pre-soldered header

* Please select the frequency version according to the local radio regulations before placing an order.

Features

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
SPI communication interface, supports mainstream MCU platforms for seamless integration and migration
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 development resources and manual (examples for ESP32 / Raspberry Pi / STM32 / Raspberry Pi Pico)

Product Comparison

Model	Core1121-XF	Core1262-XF
Frequency Support	Sub-GHz (150MHz ~ 960 MHz), S-band (1.9GHz ~ 2.1GHz), 2.4GHz	Sub-GHz (150MHz ~ 960MHz)
Modulation	LoRa / (G)FSK / LR-FHSS	LoRa / (G)FSK
Sigfox Protocol Support	√	-
AES-128 Encryption Engine	√	√
Secure Key Storage	√ (NwkKey, AppKey, etc.)	-
Device Identifier Management	√ (DevEUI / JoinEUI handling)	-
LoRaWAN Security Compliance	√ (Complete process: storage, authentication)	- (Basic encryption only)
Application Scenarios	Global deployment, multi-band applications, asset tracking, high-security scenarios	Classic Sub-GHz LoRa communication

Product Specifications

Version	Core1121-HF	Core1121-LF
RF Specifications
RF chip	LR1121
Frequency range	HF: 850 ~ 930MHz	LF: 410 ~ 510MHz
Frequency range	1900MHz ~ 2100MHz, 2400MHz ~ 2500MHz
Modulation	LoRa / (G)FSK / LR-FHSS
Data rate	LoRa: 0.091Kbps ~ 62.5Kbps (G)FSK: 0.6Kbps ~ 300Kbps
Emit power	-9dBm ~ 22dBm@Sub-GHz band -18dBm ~ 13dBm@ISM band
Receiver sensitivity	-127dBm@Sub-GHz band, SF=7, CR4_5, BWL=125KHz -111dBm@ISM band, SF=7, CR4_5, BWL=800KHz
Typical Range	Sub-GHz band: 5KM ISM band: 2KM
Spreadind factor	SF5 ~ SF12
Electrical Characteristics
Operating voltage	3.3V (maximum 3.8V)
Logic Voltage	3.3V (A level converter is required for other logic levels)
Module power consumption	Sub-GHz band: emitting current: 115mA@22dBm receiving current: 9.2mA@125KHz
Module power consumption	ISM band: emitting current: 25mA@13dBm receiving current: 8.1mA@125KHz
Hardware Specifications
Communication bus	SPI
Crystal Oscillator	32MHz TCXO
Antenna Interface	IPEX-4 connector and castellated hole (additional operation required)
Antenna Protection	TVS protection
Operating temperature	-40℃ ~ 85℃
Connector	castellated edge / solder holes, pitch 2.54mm
Dimensions	19.00×22.00mm

Application example

Industrial environment, smart home, and data acquisition...

Strong Communication Compatibility

The LR1121 can communicate with SX126X, SX127X, and SX128X series, which is still compatible with previous LoRa products after upgrading, and provides higher power efficiency and longer transmission distance.

Dual Spread Spectrum Modulation for Complex Environments

The LR1121 supports both LoRa Chirp Spread Spectrum (CSS) and Frequency Hopping Spread Spectrum (FHSS) technologies, with modulation coverage across Sub-GHz, S-band, and 2.4GHz ISM frequency bands. Suitable for applications in industrial, agricultural, smart city, and satellite IoT scenarios.