The iM282A-L is a compact and low-cost radio module that operates in the unlicensed 2.4 GHz band and combines a powerful Cortex-M3 controller with the new ultra long range transceiver SX1280 of Semtech® Corporation.

A sensitivity of up to -130 dBm and a maximum output power of +12 dBm results in a link budget of more than 142 dB. The iM282A-L is pre-certified according the European RED guideline and it can be soldered like a SMD component.

It has been specifically designed for battery driven applications and is able to achieve without any additional amplifiers a LoS range of more than 12 km. Please refer to the corresponding Application Note.

It’s available with three protocol stack:
LR Base Plus

The WiMOD LR Base Plus firmware provides LoRa®-modem functionalities which allows to implement proprietary and cost sensitive radio networks with typical topologies like peer-to-peer and star configurations. The embedded radio protocol stack offers unacknowledged and acknowledged radio packet exchange with optional encryption and automatic power saving for battery driven applications.

The WiMOD LR Base HCI protocol is designed to expose the radio module services to an external host controller. The communication between host and the radio (WiMOD) is based on so called HCI messages which can be sent through the UART.

Please refer to the download section.

Semtech LoRa® 2.4 GHz stack

iM282A is compatible with the reference implementation available as open source code developed by Semtech Corporation. This can be used to design and develop your own application directly on their MCU. Herewith you will gain access to the latest released code emulating the LoRaWAN® protocol on the WW2G4 region.

The protocol version that is currently implemented in the modem emulates LoRaWAN® 1.0.3 at 2.4 GHz.

Github Code

GlobalLink24

The WiMOD GlobalLink24 EndNode Modem firmware emulates a LoRaWAN® firmware at 2.4 GHz.

The WiMOD GlobalLink24 HCI protocol is designed to expose the radio module services to an external host controller. The communication between host and the radio (WiMOD) is based on so called HCI messages which can be sent through the UART.

Please refer to the download section.

  • 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 rangeSRD Band 2.4 GHz
ModulationLoRa®, FLRC, (G) FSK
RF output powerup to +12 dBm (50Ω pad)
Receiver sensitivityLoRa:
-130 dBm (SF 12; SB 203 kHz, CR 4/6)
-127 dBm (SF 12; SB 406 kHz, CR 4/6)
-126 dBm (SF 12; SB 812 kHz, CR 4/6)
-120 dBm (SF 12; SB 1,625 kHz, CR 4/6)
RF datarate476 bps to 2.3 Mbps
depending on modulation and settings
RF rangeup to 12000 m (Line of Sight)
Operating voltage1.8 V to 3.6 V
Current consumption0.8 µA (module in sleep, RTC off)
2 μA (module in sleep, RTC running)
9 mA (Rx, MCU sleep)
34 mA (Tx @ 3.0 V/ +12 dBm, MCU sleep)
25 mA (Tx @ 3.0 V/ +8 dBm, MCU sleep)
InterfacesUART (default)
SPI*
I²C*
IO’sDigital IOs
Analog Inputs
Dimension (LxWxH)20 x 25 x 3.3 mm
Operating temperature-40°C to +85°C
CertificationPre-Certified according to RED

* This functionality is not part of the standard firmware.

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.

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