Specifications

3
1. General Overview
Introduction
The RAK4270 LoRa Module includes a STM32L071 MCU and a SX1262 LoRa chip,
which supports 8 spreading factors (SF5 ~ SF12) and signal bandwidth that can be
adjusted between 7.8 kHz to 500 kHz.
The module complies with the LoRaWAN 1.0.2 protocol, so it can be used for implementing
LoRa networks or Lora point to point communications. The module is suitable for various
applications that require long range data acquisition and low power consumption, such as:
smart meters, supply chain and logistics tracking, agricultural sensors, smart cities, etc
This module is expected to be controlled by an external controller through its UART
interface by sending a set of AT commands. These AT commands control not only the
state of this module but also set the LoRaWan communication parameters and payloads
(see RAK AT Command Manual).
Main Features
 LoRa module is suitable for applications in Smart City, Smart Agriculture, Smart
Industry.
 Compact form factor: 15 x 15.5 x 2.5 mm (LxWxH).
 20 pin stamp pad for PCB SMT board-to-board soldering.
 I/O ports: UART/I2C/GPIO.
 AT commands control interface
 Temperature range: -40°C to +85°C
 Supply voltage: 2.0 to 3.6V
 Frequency Bands 433MHz(EU)/ 470-510MHz(CN)/ 865-867MHz(IN)/ 863–870MHz
(EU)/ 500kHz: 903–914.2MHz,125kHz:902.3-914.9MHz(US)/915-928MHz(AU)/ 920-
923MHz(KR) / 920- 923MHz(AS)
 LoRa bandwidth range of 7.8 kHz to 500 kHz, SF5 to SF12, BR=0.018~62.5 kb/s
 Ultra-low power Consumption: 1.5uA in sleep mode
 Arm Cortex-M0+ 32-bit RISC core.
 128 kbytes flash memory with ECC