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WisDuo LPWAN Module RAK4270

The RAK4270 LoRa Module includes an STM32L071 MCU and an SX1262 LoRa chip, which supports 8 spreading factors (SF5 ~ SF12) and signal bandwidth that can be adjusted between 7.8 kHz to 500 kHz.

  • Configuration Interface
  • Class
  • Frequency band
  • LoRaWAN version
  • Chipset
  • Sleep Power consumption
  • P2P support
  • Max Transmit power
  • ARM Cortex
  • Spread Factor

SG$ 9.27

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The RAK4270 LoRa Module includes an STM32L071 MCU and an SX1262 LoRa chip, which supports 8 spreading factors (SF5 ~ SF12) and signal bandwidth that can be adjusted between 7.8 kHz to 500 kHz.


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Rakwireless

RAKwireless is an industrial-leading connectivity provider that builds infrastructures and Modular Edge devices for IoT, Smart City, and Smart Agriculture markets with in-house developed solutions, utilizing LPWA (Low Power Wide Area) technologies.


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Overview

The RAK4270 LoRa Module includes an STM32L071 MCU and an SX1262 LoRa chip, which supports 8 spreading factors (SF5 ~ SF12) and signal bandwidth that can be adjusted between 7.8 kHz to 500 kHz. It has Ultra-Low Power Consumption of 2.31 μA (down to 1.61 μA @ 2.0 V), but during the Transmit mode, it can reach the maximum output power of 22 dBm. As a receiver, it can achieve a sensitivity of -138 dBm


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).

Features

  • It has Ultra-Low Power Consumption of 2.31 μA (down to 1.61 μA @ 2.0 V)

  • Perfect for ultra-long transmission

  • Highly sensitive in LoRa® modulation (~138dBm)

  • Low Cost

  • Stronger signal transmission (22dB max@PA_BOOST)

  • Easy-to-use

  • LoRa module is suitable for applications in Smart City, Smart Agriculture, Smart Industry.

  • LoRa bandwidth range of 7.8 kHz to 500 kHz, SF5 to SF12, BR=0.018~62.5 kb/s

Specifications for WisDuo LPWAN Module RAK4270

LoRaWAN
Configuration Interface USB
Uncategorized
Frequency band AS923 or AU915 or EU433 or IN865 or KR920 or US915
Class Class A, B, C
LoRaWAN version 1.0.2
Chipset STM32L071
Sleep Power consumption 2.31uA
P2P support Yes
Max Transmit power 22dBm
ARM Cortex ARM Cortex M0+
Spread Factor SF5~SF12
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Description

The RAK4270 LoRa Module includes an STM32L071 MCU and an SX1262 LoRa chip, which supports eight (8) spreading factors (SF5 ~ SF12) and signal bandwidth that can be adjusted between 7.8 kHz to 500 kHz. It has Ultra-Low Power Consumption of 2.31 μA (down to 1.61 μA @ 2.0 V) in sleep mode, but during the Transmit Mode, it can reach the maximum output power of 22 dBm. As a receiver, it can achieve a sensitivity of -148 dBm.

The module complies with Class A and C of LoRaWAN 1.0.2 specifications, and it also supports LoRa Point to Point (P2P) 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, and smart cities.

You can configure the mode and operation of the RAK4270 module using RAK4270 AT Commands via a UART interface. Also, it offers low-power features which are very suitable for battery-powered applications.

#Product 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/ADC
  • AT commands control interface
  • Temperature range: -30 °C to +85 °C
  • Supply voltage: 2.0 to 3.6 V
  • Supported bands: (EU433, CN470, IN865, EU868, AU915, US915, KR920, and AS923)
  • LoRa bandwidth range of 7.8 kHz to 500 kHz, SF5 to SF12, BR=0.018~62.5 kb/s
  • Ultra-Low Power Consumption of 2.31 μA (down to 1.61 μA @ 2.0 V) in sleep mode
  • Arm Cortex-M0+ 32-bit RISC core
  • 128 kbytes flash memory with ECC
  • 20 kbytes RAM
  • 6 kbytes of data EEPROM with ECC
  • Compliance with TBC

#Specifications

#Overview

The overview shows the module top view and its block diagram where the core and external interfaces of the module are shown.

#Board Overview

Figure 1 shows the top view of the RAK4270 LoRa module. The dimensions of the module are 15 x 15.5 x 2.5 mm

RAK4270 Module
Figure 1: RAK4270 Module

#Block Diagram

The block diagram representing the RAK4270 LoRa module is shown in Figure 2. External interfaces are outlined in the diagram.

RAK4270 Module
Figure 2: RAK4270 Module

#Hardware

The hardware specification discusses the interfaces, pinouts and its corresponding functions and diagrams. It also covers the parameters of RAK4270 Module in terms of RF, electrical, mechanical, and environmental characteristics.

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