LoRa Long Range Radio Lorawan

iM881A-M - Long Range Radio Module

Description:im881a
The iM881A-M is a compact and low-cost radio module that operates in the unlicensed 868 MHz band and combines a powerful Cortex-M0 controller with the new LoRa™ transceiver SX1272 of Semtech Corporation. It has been specifically designed for battery driven devices. It consumes 40 mA in transmit with the maximum output power of +14dBm. Combined with an excellent sensitivity of down to -138 dBm a range of 12 km can be achieved in free space environment. The iM881A-M is pre-certified according the European R & TTE guideline and can be soldered like an SMD component. iM881A-M passed the Orange device interoperability test. This test validates the performance of the iM881A-M in the Orange public LoRaWAN network environment.

 

 

 

  • Maximum sensitivity ‑138 dBm
  • Range up to 12000 m (LoS)
  • Solderable like a SMD component
  • 50Ω pad for antenna
  • RoHS conform


  • Automated Meter Reading
  • Home and Building Automation
  • Wireless Alarm and Security Systems
  • Industrial Monitoring and Control
  • Long Range Irrigation Systems
  • IoT (Internet of Things)
  • Smart Cities


Frequency range: SRD Band 863 to 870 MHz
Modulation: LoRa™ Spread-Spectrum
RF output power: up to +15 dBm (50Ω pad)
Receiver sensitivity: -138 dBm (SF 12;  SB 125 kHz, CR 4/6)
-134 dBm (SF 12;  SB 250 kHz, CR 4/6)
-128 dBm (SF 12;  SB 500 kHz, CR 4/6)
RF datarate: 0.24 to 37.5  kbps
50kbps FSK-modulation
RF range: up to 12000 m (line of sight)
Operating voltage: 1.8 V to 3.6 V
Current consumption: 1.4 μA (module in sleep, RTC running)
11.2 mA (Rx)
38 mA (Tx @ 3.0 V/ +14 dBm)
Interfaces: UART
SPI*
I²C*
RF (LoRa™)
IO's: Digital IOs
Analog Inputs
Dimension (LxWxH): 20 x 25 x 3.3 mm
Operating temperature: -40°C to +85°C
Certification:

Pre-Certified according to ETSI EN 300 220
iM881A-M passed the Orange device interoperability test

WiMOD LoRaWAN EndNode Studio

WiMOD LR_Studio (LoRa)

The WiMOD LoRaWAN™ EndNode Studio is a Windows application which allows to explore the capabilities of the WiMOD LoRaWAN™ EndNode firmware. The GUI offers a comfortable way to configure and control the features of the embedded radio stack. The WiMOD LR Studio is a Windows application which allows to explore the capabilities of the IMST LoRa™ module, an ultra-low-power, high-performance, pre-certified Long Range radio module. The Windows GUI offers a comfortable way to configure and control the features of the embedded WiMOD Radio Stack.

Introduction

Introduction

Module Configuration

Module Configuration

Join the Network

Radio Link Test

LoRaWAN HCI (Host Controller Interface)

Data Link Service

 

Firmware Update

 



General Information:
iM880x_AN011_RangeTest_V1_1.pdf This Application Note includes results of various range tests made with the SK-iM880B.
iM880B_AN016_RFSettings_V1_1.pdf This Application Note provides an overview about the possible RF settings of iM881A-M for the 868 MHz frequency band.
iM881A_Datasheet_V1_0.pdf Data Sheet for iM881A-M.
WiMOD_AltiumModulesLibs_V1_9.zip Modules Lib for Altium Designer.
 

 

WiMOD LoRaWAN:
WiMOD_LoRaWAN_EndNode_Modem_Feature_Spec_V1_10.pdf This document outlines the current version of WiMOD LoRaWAN EndNode Modem firmware features.
This firmware is designed for the WiMOD LoRaWAN radio module family (e.g. iM881A-M, iM880 and iU880B).
WiMOD_LoRaWAN_EndNode_Modem_HCI_Spec_V1_13.pdf This document outlines the current version of the WiMOD LoRaWAN™ HCI specification.
The WiMOD LoRaWAN™ HCI protocol is designed to expose the radio module services to an external host controller.
The communication between host and the radio is based on so called HCI messages which can be sent through a UART interface.
WiMOD_LoRaWAN_EndNode_Firmware_V1_17.zip

This file contains the current WiMOD LoRaWAN™ firmware (hex-file) for  iM881A-M, iM880 and iU880B
It contains all necessary documentation and release information.

WiMOD_LoRaWAN_DevTool_V2_1_0.zip This tool is intended to be used for the first steps of implementing the LoRaWAN HCI interface between the radio module and the host MCU. It is a simple tool for checking if the basic communication primitives are working. You can select LoRaWAN_HCI primitives with CRC and Slip encoding or in raw format.
WiMOD_LoRaWAN_EndNode_Studio_V0_33_0.zip

This is a GUI for easy configuration of LoRaWAN™ compliant radio nodes. It supports Direct Activation and Over The Air (OTA) Activation, and provides the possibility to transmit unconfirmed and confirmed data.
It contains the current firmware for iM881A-M, iM880B, iU880B and all necessary documentation and release information

WiMOD_LoRaWAN_ExampleCode_EFM32_V1_3.zip This C example code project shows how to implement the WiMOD LoRaWAN™ HCI protocol on the host side. The project is created for IAR Embedded Workbench and uses an EFM32 microcontroller as host.
WiMOD_LoRaWAN_ExampleCode_HCI_C_V0_1.zip This C example code project shows how to implement the WiMOD LoRaWAN™ HCI protocol on the host side.

 

* This functionality is not part of the standard firmware and only available on demand.

Subject to changes without notice.