RLX COMPONENTS s.r.o. , Electronic Components Distributor.
RLX COMPONENTS s.r.o. , Electronic Components Distributor.
Core1121 LF Dual-Band LoRa Module,Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31901)
WS-31901
€12.18
9.90 € tax excl.
Core1121 LF Dual-Band LoRa Module,Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31901)
Core1121 LF Dual-Band LoRa Module,Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31901)
- Part No.: Core1121-LF
- Version : Core1121-LF
Core1121 LF 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 |
| 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 |
|
| 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.
ISM Band
This frequency band is globally license-free and is ideal for short-range, high-speed data transmission
Pinout definition
High-quality Components
For stable performance of communication module
Original chip
LR1121
Industrial grade crystal oscillator
-40 ~ 85℃
Two connection methods for Antenna
IPEX / Castellated hole
Professional shield
Anti-interference & ESD protection
Temperature Compensated Crystal Oscillator
Ensures the long time working of the module without frequency shift in the high and low temperature environments of industry
Outline Dimensions
Balenie Obsahuje / Package Content
Core1121-LF
- Core1121-LF x1
- IPEX4 to SMA cable x1
- 2DB SMA antenna x1
- 2.4G antenna x1
WS-31901
Specific References
Core1121 LF Dual-Band LoRa Module,Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31901)
Core1121 LF Dual-Band LoRa Module,Low-Power LR1121 Transceiver, For Sub-GHz And 2.4GHz (WS-31901)
€12.18
9.90 € tax excl.