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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.

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

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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

Antenna
Connector	with IPEX or No IPEX
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

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

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.

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.