Core2021 LF/HF Dual-Band LoRa Module, Based on LR2021 Transceiver, Supports Sub-GHz, 2.4GHz And 1.5~2.5GHz Frequency Bands, Low-power And Multi-protocol IoT LoRaWAN Module
NB-IoT / Cat-M / LoRa / LoRaWAN, ZigBee, Bluetooth

Core2021 LF/HF Dual-Band LoRa Module, Based on LR2021 Transceiver, Supports Sub-GHz, 2.4GHz And 1.5~2.5GHz Frequency Bands, Low-power And Multi-protocol IoT LoRaWAN Module

$11.99 - $12.99
Version Options
Core2021-HFCore2021-LF
Pinheader Options
Standard Ver.with pre-soldered header
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Details

Core2021 LF/HF Dual-Band LoRa Module, Based on LR2021 Transceiver, Supports Sub-GHz, 2.4GHz And 1.5~2.5GHz Frequency Bands, Low-power And Multi-protocol IoT LoRaWAN Module
Core2021 Dual-Band LoRa Module

Supports Sub-GHz, 2.4GHz And 1.5 ~ 2.5GHz Frequency Bands

Supports FLRC modulation, with data rate up to 2.6 Mbps

Core2021 LF/HF Dual-Band LoRa Module, front view

Version Options

HF version, 850 ~ 930MHz frequency

Applicable to Europe, North America and Oceania

Core2021-HF

Core2021-HF
Standard version

Core2021-HF-M

Core2021-HF-M
with pre-soldered header


LF version, 410 ~ 510MHz frequency

Applicable to Europe, Asia

Core2021-LF

Core2021-LF
Standard version

Core2021-LF-M

Core2021-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 fourth-generation LoRa multi-band transceiver LR2021
  • Supports Sub-GHz (410 ~ 510 MHz / 850 ~ 930 MHz), 2.4 GHz ISM band, and 1.5 ~ 2.5 GHz licensed bands
  • Connects to the cloud via LoRa or LoRaWAN protocol through a gateway, enabling low-power wide-area networking (LPWAN)
  • Compatible with multiple protocols including LoRa, FLRC, FSK, BLE, and ZigBee
  • SPI communication interface, supports mainstream MCU platforms for seamless integration and migration
  • 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 / Arduino / STM32 / Raspberry Pi Pico)

Product Comparison
Model Core2021-XF Core1121-XF Core1262-XF
Frequency Support Sub-GHz (410 ~ 510 MHz or 850 ~ 930 MHz), 2.4 GHz ISM band, and 1.5 ~ 2.5 GHz licensed bands Sub-GHz (410 ~ 510 MHz or 850 ~ 930 MHz)
Modulation LoRa, FLRC, FSK, LR‑FHSS, BLE, ZigBee 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, audio communication Global deployment, multi-band applications, asset tracking, high-security scenarios Classic Sub-GHz LoRa communication
Product Specifications
Version Core2021-HF Core2021-LF
RF Specifications
RF chip LR2021
Frequency range HF: 850 ~ 930MHz LF: 410 ~ 510MHz
2.4 GHz ISM band, 1.5 ~ 2.5 GHz licensed bands
Modulation LoRa, FLRC, FSK, BLE, ZigBee
Data rate LoRa: 0.091Kbps ~ 125Kbps
FLRC: 0.13 Mbps ~ 2.6 Mbps
FSK: 0.5 Kbps ~ 2 Mbps
BLE: 125 kbps / 500 kbps / 1 Mbps / 2 Mbps
Emit power -10dBm ~ 22dBm at Sub-GHz band
-17dBm ~ 12dBm at ISM band
Receiver sensitivity -141.5dBm at Sub-GHz band, SF=7, CR4_5, BWL=125KHz
-130.5dBm at ISM band, SF=12, CR4_5, BWL=800KHz
-111dBm at FLRC，260 Kbps
-97dBm at BLE，2 Mbps
Typical Range Sub-GHz band: 5KM
ISM band: 2KM
Spreadind factor SF5 ~ SF12
Electrical Characteristics
Operating voltage 3.3V (maximum 3.7V)
Logic Voltage 3.3V (A level converter is required for other logic levels)
Module power consumption Sub-GHz band:
emitting current: 105mA at 22dBm
receiving current: 5.8mA at 125KHz
ISM band:
emitting current: 23mA at 12dBm
receiving current: 6.4mA at 125KHz
Hardware Specifications
Communication bus SPI
Crystal Oscillator XTAL 32MHz
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...

Core2021 LF/HF Dual-Band LoRa Module, application example
Strong Communication Compatibility

The LR2021 can communicate with LR1121, SX126X, SX127X, and SX128X series, maintaining backward compatibility with existing LoRa products after upgrades, and provides higher power efficiency and longer transmission distance.

Core2021 LF/HF Dual-Band LoRa Module with strong communication compatibility
Dual Spread Spectrum Modulation for Complex Environments

The LR2021 integrates both LoRa Chirp Spread Spectrum and Long Range – Frequency Hopping Spread Spectrum technologies, supports Sub-GHz, 2.4 GHz ISM band, and 1.5 ~ 2.5 GHz licensed tri-band coverage, enabling both terrestrial IoT and satellite IoT communication requirements. It is suitable for applications in industrial, agricultural, smart city, and satellite IoT scenarios.

Core2021 LF/HF Dual-Band LoRa Module, dual spread spectrum modulation

ISM Band

This frequency band is globally license-free and is ideal for short-range, high-speed data transmission

Core2021 LF/HF Dual-Band LoRa Module, supports ISM Band

Pinout definition
Core2021 LF/HF Dual-Band LoRa Module, pinout definition

High-quality Components

For stable performance of communication module

Core2021 LF/HF Dual-Band LoRa Module, using LR2021 chip

Original chip
LR2021

Core2021 LF/HF Dual-Band LoRa Module, adopts Industrial grade crystal oscillator

Industrial grade crystal oscillator
-40 ~ 85℃

Core2021 LF/HF Dual-Band LoRa Module, two connection methods

Two connection methods for Antenna
IPEX4 / Castellated hole

Core2021 LF/HF Dual-Band LoRa Module, professional shield

Professional shield
Anti-interference & ESD protection



Actual Distance test
Core2021 LF/HF Dual-Band LoRa Module, actual distance test

Outline Dimensions
Core2021 LF/HF Dual-Band LoRa Module, outline dimensions
Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.


LoRa Module Selection Guide
Product Model RF Specifications Electrical Characteristics
Frequency band Modulation Emit power Spreadind factor Operating voltage power consumption

Core2021-LF		 410 ~ 510MHz LoRa, FLRC, FSK, BLE, ZigBee 22dBm SF5 ~ SF12 3.3V emitting current: 105mA@22dBm
receiving current: 5.8mA@125kHz
1500 ~ 2500MHz 12dBm SF5 ~ SF12 3.3V emitting current: 23mA@12dBm
receiving current: 6.4mA@125kHz

Core2021-HF		 850 ~ 930MHz 22dBm SF5 ~ SF12 3.3V emitting current: 105mA@22dBm
receiving current: 5.8mA@125kHz
1500 ~ 2500MHz 12dBm SF5 ~ SF12 3.3V emitting current: 23mA@12dBm
receiving current: 6.4mA@125kHz

Core1121-LF		 410 ~ 510MHz LoRa, GFSK, LR-FHSS 22dBm SF5 ~ SF12 3.3V emitting current: 115mA@22dBm
receiving current: 9.2mA@125KHz
1500 ~ 2500MHz 13dBm SF5 ~ SF12 3.3V emitting current: 25mA@13dBm
receiving current: 8.1mA@125KHz

Core1121-HF		 850 ~ 930MHz 22dBm SF5 ~ SF12 3.3V emitting current: 115mA@22dBm
receiving current: 9.2mA@125KHz
1500 ~ 2500MHz 13dBm SF5 ~ SF12 3.3V emitting current: 25mA@13dBm
receiving current: 8.1mA@125KHz

Core1262-LF		 410 ~ 510MHz LoRa / (G)FSK 22dBm SF5 ~ SF12 3.3V emitting current: 107mA@22dBm
receiving current: 5.3mA@125KHz

Core1262-HF		 850 ~ 930MHz 22dBm SF5 ~ SF12 3.3V emitting current: 45mA@14dBm
receiving current: 5.3mA@125KHz

Quick Overview

Core2021-HF

  1. Core2021-HF x1
  2. IPEX4 to SMA cable x1
  3. 2dBi SMA antenna x1
  4. 2.4G antenna x1
1Core2021-HF
2
3
4

Core2021-HF-M

  1. Core2021-HF with pre-soldered headers x1
  2. IPEX4 to SMA cable x1
  3. 2dBi SMA antenna x1
  4. 2.4G antenna x1
1Core2021-HF-M
2
3
4

Core2021-LF

  1. Core2021-LF x1
  2. IPEX4 to SMA cable x1
  3. 2dBi SMA antenna x1
  4. 2.4G antenna x1
1Core2021-LF
2
3
4

Core2021-LF-M

  1. Core2021-LF with pre-soldered headers x1
  2. IPEX4 to SMA cable x1
  3. 2dBi SMA antenna x1
  4. 2.4G antenna x1
1Core2021-LF-M
2
3
4