SARA-R540S - LTE-M/NB-IoT module for 400MHz spectrum with Secure Cloud

Designed to last an IoT lifetime: 5G-ready with the u-blox UBX-R5 chipset

The u-blox SARA-R540S LTE-M/NB-IoT module for 400MHz spectrum is specifically designed for LTE networks deployed over the 400 MHz spectrum (bands 31, 72, 73, 87, 88). Smart metering, smart grid, smart city, and public safety are typical applications that may also require indoor coverage in locations that are otherwise difficult to reach via cellular connectivity. 

SARA-R540S has been optimized for extremely low power consumption, using less than 1 μA of current in PSM mode, making it ideal for battery-powered applications.

  • Built-in end-to-end security with hardware-based root of trust inside discrete secure element
  • IoT-Security-as-a-Service with foundation, design and end-to-end security, as well as access control
  • Support of Power Class 2 (26 dBm) over the 400 MHz spectrum
  • Optimized ultra-low power consumption
  • Critical firmware updates delivered and services enabled via uFOTA

A good way to assess the functionality and performance of the SARA-R540S LTE-M/NB-IoT module for 400MHz spectrum is to purchase an EVK-R540S evaluation kit.

To meet the needs of these applications, SARA-R540S combines the support of the Power Class 3 over the standard LTE bands in the 410 MHz spectrum with the enhanced 26 dBm maximum output power (Power Class 2) in the 450 MHz spectrum. In addition, SARA-R540S has been optimised for extremely low power consumption, using less than 1 μA of current in PSM mode, making it ideal for battery-powered applications. Customers can future-proof their solutions by means of OTA firmware updates, thanks to the uFOTA client/server solution, which utilizes LwM2M, a light and compact protocol ideal for IoT applications.

SARA-R540S is based on u‑blox’s UBX-R5 cellular chipset. By bringing all technology building blocks in house and having full hardware and software ownership, u‑blox can guarantee long-term device availability and provide lifetime support of the entire platform, down to the chipset level. Like other modules in the SARA-R5 family, SARA-R540S is a Secure Cloud module, supporting u‑blox IoT-Security-as-a-Service, and includes an internal, hardware-based, secure element and a lightweight pre-shared key management system that guarantee state-of-the-art security. With this it provides security-based features and services like local data protection, zero touch provisioning, anti-cloning, and secure chip-to-chip communication.

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SARA-R540S

Secure Cloud LTE-M and NB-IoT module for multi-regional use with 400 MHz spectrum support

SARA-R540S

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