SARA-R4/N4 Series - Size-optimised LTE Cat M1/NB1 and EGPRS modules

Ultra-compact LTE Cat M1/NB1 and EGPRS modules with global coverage

At 16 x 26 mm, the SARA-R4 series modules are among the world's smallest LTE Cat M1/NB1 and EGPRS multi-mode modules offered in a single hardware design. They have software-based global band configuration, and come in an LGA package for easy manufacturing.

The R410M and R412M single hardware versions simplify diverse deployments worldwide and provide enormous operational efficiencies. Software-based configurability in all deployed bands enables essentially world-wide coverage. The flexibility extends further through system selection as LTE Cat M1, LTE Cat NB1, EGPRS single or preferred modes. 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. The modules offer low power consumption by utilizing PSM and eDRX, which extend battery life to up to 10 years. Coverage enhancement reaches deeper into buildings and basements (and underground with NB1) with up to 15 dB improved MCL with Cat M1 compared to GSM or Cat 1.

With many interface options and an integrated IP stack, the SARA-R4 modules are targeted to a wide range of data-centric IoT applications, such as smart metering, smart lighting, telematics, asset tracking, remote monitoring, alarm panels, and connected health. The SARA-R4 modules target long life, low-maintenance, cost-sensitive, lower power consumption, extended battery life applications.

Key features:

  • Global configurability with single hardware version
  • Flexible mode selection as LTE Cat M1, LTE Cat NB1, EGPRS-only/preferred
  • Critical firmware updates delivered via uFOTA with LWM2M
  • Low power consumption and longer battery life
  • Extended range in buildings, basements, and with NB1, underground
  • Easy migration between u‑blox 2G, 3G and 4G modules

For sales and technical development support from our in-house engineering team, please contact the Alpha Micro team.

SARA-R4_Product Selector

Click here for the u-blox cellular modules linecard.

Part No. Description Pack size
SARA-N410-02B LTE module for USA (T-Mobile); Cat NB1; Bands 2, 4, 5, 12 Reel of 250
SARA-R404M-00B LTE-only module for USA (Verizon); Cat M1, Band 13
Reel of 250
SARA-R410M-01B LTE module for North America (AT&T); Cat M1; Bands 2, 4, 5, 12
Reel of 250

LTE Cat M1 / NB1 module with global support

Reel of 250
SARA-R412M-02B LTE, EGPRS module for global use; Cat M1, Cat NB1 deployed bands: 2, 3, 4, 5, 8, 12, 13, 20, 28; EGPRS quad-band, 850/900/1800/1900 MHz Reel of 250
Support Tools
EVK-N410-02B Evaluation kit for SARA-N410-02B Each
EVK-R404M-00B Evaluation kit for SARA-R404M Band 13)
Cat M1 evaluation kit for SARA-R410M-01B (bands 2,4,5,12)
EVK-R410M-11B Cat M1 evaluation kit for SARA-R410M-11B (bands 3,5,8,28) Each
EVK-R410M-02B Cat M1 NB1 evaluation kit for SARA-R410M-02B, global support Each

EVK‑R4 kits are powerful and easy‑to‑use tools that simplify the evaluation of u‑blox SARA‑R4 series multimode LTE Cat M1/NB1 cellular modules, as well as an environment for designing and testing cellular and GNSS applications. The kits are very user‑friendly, providing a USB interface for development, testing and tracing. The kits come with a built‑in u‑blox GNSS receiver module, giving designers the flexibility to test either the LTE or the GNSS functionality. The kits are to be used with a Windows PC via USB interface, and require an activated SIM card (not included). USB drivers can be downloaded from u‑blox website.


  • u‑blox LTE Cat M1/NB1 cellular technology
  • Easy to use
  • Simple access to pins and features of SARA‑R4  series modules
  • Extensive visualization and evaluation features
  • 3 USB interfaces: 2 cellular (1 native USB, 1 USB/UART), 1 GNSS

Kit includes:

  • Evaluation board with a SARA‑R4 series LTE Cat M1/NB1  module and a u‑blox GNSS module
  • USB cable
  • 2 cellular LTE antennas
  • GPS/GLONASS antenna
  • Power adapter
  • Audio headset
  • Quick start card

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Last updated: 14 March 2018