- High-Speed Breakthrough:
The next-generation Semtech LR2021 not only retains the ultra-long-range communication of traditional LoRa but also introduces the new FLRC modulation, achieving a remarkable communication rate of up to 2.6 Mbps. This capability extends its use to bandwidth-sensitive applications, such as audio streaming and image transmission.
- One Hardware, Global Coverage
With broad dual-band coverage (Sub-GHz & 2.4GHz) and the switch-less front end design, a single hardware design achieves global compatibility. Significantly streamline the design process and accelerating your market entry.
- Univeral Platform
By integrating multiple modulation schemes (LoRa, FLRC, FSK, OQPSK) within a single silicon platform. LR2021 allows developers to choose the optimal combination for any scenario from ultra-low-power sensors to high-speed-controls without hardware redesign. Compatible with various low-power wireless protocols including Amazon Sidewalk, W-MBUS, Wi-SUN FSK, and Z-Wave, LR2021 enables true one-platform-fits-all development, dramatically reducing time-to-market and strategic risk.
- Best-in-Class Energy Efficiency & Performance
LR2021 delivers a definitive generational leap, outperforming predecessors like the SX1262 across most key metrics. Lower transmission current and higher receiving sensitivity will translate directly into longer battery life and more reliable connections for your devices.
- Enhanced Channel Activity Detection (CAD):
The LR2021 employs Fast CAD technology featuring an intelligent adaptive threshold and early termination mechanism, which substantially reduces both the power consumption and time required for idle channel detection, further improving device energy efficiency.
- Ready-to-Go for Arduino, STM32 & Nordic DK
This integrated kit combines real-time OLED feedback and plug-and-play Grove connectors for rapid sensor integration. Its hardware is pin-compatible with Arduino Uno, STM32 Nucleo, and Nordic DK platforms, ensuring your validated design moves seamlessly to production.
note
Learn more about the next-generation performance of the Semtech LoRa Plus™ LR2021.
RF Chip Specification
Main Chip | LR2021 |
Chip Size | 5(W)*5(L)*0.9(H)mm |
Chip Package | QFN-48 |
Power Supply | 1.8 - 3.7V, 3.3V (typical) |
Sleep Current | 470nA (without RTC) 1.28uA (with RTC) |
Power Distortion Mode | SIMO DC-DC LDO |
Maximum Operating Current (Transmitter) | Sub-GHz: 105mA @ +22dBm 2.4 GHz: 27mA @ +14dBm |
Maxium Operating Current (Receiver) | LoRa SF7 @ 125KHz: 5.7mA FLRC: 10.9mA |
Output Power | Sub-GHz: +22dBm to -10dBm 2.4 GHz: +12dBm |
Receiving Sensitivity | LoRa SF12 @ 125kHz: -141.5dBm FLRC @ 260kbps:-111dBm BLE @ 2Mbps: -97dBm |
Harmonic Noise | 915MHz @ 100kHz: -104dBc/Hz 2.45GHz @ 100kHz: -93dBc/Hz |
Antenna | RFI_LF（Sub-GHz） RFI_HF（2.4GHz） Impedence: 50Ω |
Interface | SPI |
Working Temperature | -40°C to +85°C |
General
Board Size | 65(W) x 73(L)mm x 27(H)mm |
Voltage | 3.3V (USB type-C) |
Button | K1: User button K2: Reset button |
Display | 0.96" OLED, 128 x 64 pixel |
Grove Interface | I2C x 2 UART x 1 |
Debug Interface | SWD SAMD |
Antenna | Sub-GHz 2.4 GHz |
General
Board Size | 65(W) x 73(L)mm x 27(H)mm |
Voltage | 3.3V (USB type-C) |
Button | K1: User button K2: Reset button |
Display | 0.96" OLED, 128 x 64 pixel |
Grove Interface | I2C x 2 UART x 1 |
Debug Interface | SWD SAMD |
Antenna | Sub-GHz 2.4 GHz |
Hardware Overview & Pinout
- Global Shipping and Logistics Tracking
Enable seamless global asset tracking. The LR2021 allows devices to automatically comply with regional radio standards, providing uninterrupted data from port to port.
- Wireless Video & Image Transmission
With FLRC speeds up to 2.6 Mbps, LR2021 sends images within a second, enabling low-power visual monitoring for security, industrial, and environmental applications.
- Audio Communication
LR2021 makes low-power audio communication practical—enabling safety intercoms on remote worksites, spoken alerts for equipment and voice-activated sensing in smart environments.
- Converged Network
Unify dedicated short-range networks (for high-speed data collection) and wide-area networks (for continuous cloud connectivity) on a single device. This architectural shift eliminates redundant infrastructure.
- High-Speed OTA for Critical Assets
LR2021's high-throughput link ensures robust and rapid firmware updates. It enables guaranteed, zero-downtime updates for critical infrastructure sensors.
Semtech LR2021_EU868/US915 Schematic.pdf
Semtech LR2021_CN490 Schematic.pdf
Wio-LR2021 Module for 868/915 MHz & 2.4 GHz Bands | x2 |
Seeed Studio XIAO nRF54L15 Module | x2 |
LoRa Plus Expansion Board | x2 |
LF Antenna (868-915 MHz) | x2 |
HF Antenna (2.4 GHz) | x2 |
USB Cable Type-A Male to Type-C Male (1m) | x2 |
U.FL to U.FL RF coaxial cable (100mm) | x2 |
Read Me Note | x1 |
| HSCODE | 8517799000 |
| USHSCODE | 8517620090 |
| UPC | |
| EUHSCODE | 8517180000 |
| COO | CHINA |
Array
Shipping rates Australia wide and New Zealand
FAQ:
- How do I estimate shipping for my order?
- Add products in the shopping cart and head to the checkout page to estimate the shipping.
Dispatch time
Unless expressly agreed otherwise with you, we will not commence delivery of an order until we have received cleared payment of the purchase price in full.
All orders placed before 11 am AEST (Monday to Friday) will ordinarily be processed on the same day.
We will endeavour to ship the Products by the applicable time indicated on the website, but all times are indicative only. All shipping times are dispatch times only, and actual delivery dates will depend on the shipping method chosen, delivery address and delivery service provider.
Note- Please make a note during purchase if you require any item urgently. However we cannot guarantee that we will be able to comply with any request.
*Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Thomastown, 3074 as the "from" address - https://auspost.com.au/parcels-mail/delivery-times.html?ilink=tools-open-deliv-times.
We ship all products throughout mainland Australia, Tasmania and New Zealand - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional areas but do not deliver to areas in Australia where the Australia Post delivery network is not available.
Check Express shipping delivery coverage area at - http://auspost.com.au/parcels-mail/delivery-areas.html
Receipt of deliveries
Deliveries to post office boxes are not permitted where delivery is by courier. If delivery is by courier and nobody is available at the delivery address to accept delivery when delivery is attempted then the courier may either:
- leave the relevant parcel at the unattended address (the courier will do so if specified in your delivery requirements); or
- re-attempt delivery at a later time or date, in which case we may charge you an additional re-delivery fee.
Note that if a delivery is left unattended at the shipping address and is subsequently stolen then the theft is your responsibility, not ours.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.