- 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 |
- 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_US915 Schematic
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 |
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