Laird ultra-low power modules for LoRaWAN

  • May 24, 2023
  • William Payne

Laird Connectivity has launched an ultra-low power module series designed for LoRaWAN. The RM126x series is designed to provide long-range low power IoT in challenging RF use cases. These include industrial, agriculture and forestry, smart cities, utilities monitoring, transportation, logistics, supply chain, healthcare monitoring, and retail.

Based on the Silicon Labs EFR32 series microcontroller (MCU) and the Semtech SX126x radio, the RM126x module series comes as two variants with the RM1262 based on the SX1262 chipset and the RM1261 based on the SX1261 chipset.

Laird claims these as the smallest LoRaWAN modules on the market with a built in MHF4 connector. The integrated TCXO ensures improved performance across the industrial temperature range (-40 to +85 °C).

The RM126x modules support LoRaWAN classes A, B, and C for bi-directional communication. According to Laird, they are the first LoRaWAN modules to leverage the advantages of Silicon Labs hardware, software, and tools.

Customers can use proprietary LoRa Point-to-Point (P2P) capabilities, allowing creation of private ultra-long range radio networks between two RM126x modules, a self-contained proprietary network without a traditional gateway.

The modules are designed to operate in hosted and hostless modes. In hosted mode, when connected to an external MCU, the RM126x is programmed with Laird Connectivity’s AT command set. In hostless mode, the RM126x uses the Cortex-M33 core, allowing customers to use Silicon Labs’ Simplicity Studio to write their own application using C and take advantage of sample applications and radio certifications offered by Laird Connectivity.

“The RM126x series of modules provide developers with the flexibility to choose the optimal development options and power requirements for their LoRaWAN implementation,” said Senthooran Ragavan, Senior Product Manager, Laird Connectivity. “From simple programming with our AT command set to full C code development using Silicon Labs’ Simplicity Studio, all of which are backed with dedicated reference designs and our renowned global support, we have all your development options covered.”

The RM126x series has been developed with sub-GHz antennas available in the FlexPIFA and i-FlexPIFA series’.  Solutions are available for both 868 & 915MHz frequency bands. The module/antenna combinations are certified to work all over the world including: RM1261 for Europe, UK, Taiwan, Japan, India; and RM1262 in USA, Canada, Australia, New Zealand.