LR1121 Dual Band 2.4G 433MHz Wireless RF Module

product

LR1121 Dual Band 2.4G 433MHz Wireless RF Module

Model	LR1121
Brand	OTOMO
Packaging	SMD
Origin	Mainland China
Communication method	SPI
Antenna type	External
Applicable scenarios	UAV/wireless remote control/industrial remote control applications
Working voltage	3.3V
Color classification	Sample (with FPC antenna), full price, test kit (recommended to order 2)

Product description

This dual-band LoRa wireless module, powered by the LR1121 chip, supports both 433 MHz and 2.4 GHz RF communication, offering strong compatibility with LoRaWAN IoT applications. It serves as an efficient alternative to modules like LoRa 433 MHz and SX1278, while supporting platforms such as Arduino, ESP32, and Raspberry Pi. Ideal for smart homes, industrial automation, and agriculture, it delivers stable, long-range and high-speed wireless communication in a compact, flexible design—perfect for modern IoT projects.

Product features

1. SPI interface
2.LoRa modulation mode
3.433M and 2.4G frequency bands can be switched freely
4.Can communicate with each SX126x/8x
5.Supports Weishi communication
6.Supports LoRaWAN standard specifications

Product Parameters

Product model	LR1121TR4/2.4-GC
Chip solution	LR1121
Operating frequency	433MHz/2.4GHz
Maximum output power	22dBm@433MHz/13dBm@2.4G
Receive sensitivity	-144dBm@SF=12
Transmit current	433MHz:118mA@22dBm/2.4GHz:26mA@13dBm
Receive current	LoRa@SF12 125kHz sub-GHz/5.7mA
Sleep current	1.5uA
Typical supply voltage	3.3V
Support	BW:10.42KHz~812KHz;SF:5~12;CR:4/5，4/6，4/7，4/8
Reference distance	6Km
Communication interface	SPI
Antenna interface	External antenna/PEX antenna mount
Module size	23*15.8mm