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SARA-R4 series

LTE-M / NB-IoT / EGPRS modules with Secure Cloud

Built-in foundation and end-to-end security with root of trust

  • Always and everywhere location, integrated u‑blox M8 GNSS receiver and CellLocate®
  • Software-based configurability within each hardware design
  • Simultaneous LTE communication with GNSS positioning
  • Guaranteed best coverage with 23dBm output power
  • Future-proof solutions via LWM2M and uFOTA

Product variants


Secure Cloud LTE-M, NB-IoT and EGPRS combo module with integrated M8 GNSS receiver for multiregional use


Secure Cloud LTE-M, NB-IoT and EGPRS module for multi-regional use


LTE-M, NB-IoT and EGPRS module for multiregional use


LTE module for Japan; Cat M1 deployed bands 1, 8, 19


LTE Module for Korea; Cat M1 deployed bands 3, 5, 26


LTE module for multi-regional use; Cat M1, NB1 bands: 3, 5, 8, 20, 28


LTE module for North America; Cat M1 deployed bands 2, 4, 5, 12, 13


LTE module for multi-regional use; Cat M1/NB1 deployed bands: 1*, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26*, 28 (* roaming bands)


LTE & 2G module for multi-regional use; Cat M1/NB1 deployed bands: 2, 3, 4, 5, 8, 12, 13, 20, 26*, 28*; EGPRS quad-band, 850/900/1800/1900 MHz (* roaming bands)

Product variantsSARA-R422M8SSARA-R422SSARA-R422SARA-R410M-63BSARA-R410M-73BSARA-R410M-83BSARA-R410M-52BSARA-R410M-02BSARA-R412M-02B
Antenna detection
Dual stack IPv4/IPv6
Embedded DTLS 1.2
Embedded FTP/HTTP
Embedded MQTT, MQTT-SN
Embedded TCP/UDP
Embedded TLS 1.2
FW update via serial interface
Last gasp
LWM2M with dynamically configurable objects
Power save mode, rel.12
Secure cloud services
Security root of trust
Ultra low PSM (deep sleep)
GNSS features 
Number of concurrent GNSS3
Concurrent GNSS
North America
Cellular features 
LTE bands1, 2, 3, 4, 5, 8, 12, 13, 20, 25, 26, 28, 66, 71, 851, 8, 193, 5, 263, 5, 8, 20, 282, 4, 5, 12, 131, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 282, 3, 4, 5, 8, 12, 13, 20, 26, 28
Data ratesM1 (588 kbit/s DL and 1119 kbit/s UL), NB2 (127 kbit/s DL and 158.5 kbit/s UL)M1 (300 kbit/s DL and 375 kbit/s UL)M1 (300 kbit/s DL and 375 kbit/s UL), NB1 (27.2 kbit/s DL, 62.5 kbit/s UL)M1 (300 kbit/s DL and 375 kbit/s UL)M1 (300 kbit/s DL and 375 kbit/s UL), NB1 (27.2 kbit/s DL, 62.5 kbit/s UL)
GSM bandsQuad-bandQuad-band
Positioning (for CEL products)AssistNow, CellLocateAssistNow, CellLocate, GNSS via ModemAssistNow, CellLocate, GNSS via ModemAssistNow, GNSS via Modem
DDC (I2C compliant)1
Size [mm]16 x 26 x 2.5

Product Summary

User Guide

Data Sheet

Getting Started

Integration Manual

Interface Manual

Application Note

CAD/CAE Libraries

Information Note

Product Change Note

End of Life Note

Conformity and Certification


Design Resources



White Paper

The SARA-R4 series modules are ideal for mission-critical IoT solutions, as they include a unique and immutable root-of-trust. This provides the foundation for a trusted set of advanced security functionalities. The scalable, pre-shared key management system offers best-in-class data encryption and decryption, both on-device as well as from device-to-cloud. Utilizing the latest (D)TLS stack and cipher suites with hardware-based crypto acceleration provides robust, efficient and protected communication.

SARA-R422M8S is pre-integrated with the u‑blox M8 GNSS receiver and separate GNSS antenna interface, which provides highly reliable, accurate positioning data simultaneously with LTE communication. In addition, the module offers unique hybrid positioning, in which the GNSS position is enhanced with u‑blox CellLocate® data, providing location always and everywhere.

Customers can future-proof their solutions by means of the uFOTA client/server firmware updates, which utilizes LWM2M, a light and compact protocol ideal for IoT applications. Customized objects and resources can be created and added to devices that are already commercially in the field via the LWM2M dynamically loaded objects functionality.

The ultra-compact 16 x 26 mm LGA modules offer the ability to make software-based configuration decisions for LTE bands, radio interface and system selection preference, as well as Mobile Network Operator within each hardware variant.

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.

Thanks to the u‑blox nested design principle SARA modules are compatible with other u‑blox product families, enabling easy migration from 2G, 3G and 4G. This maximizes the investments of customers, simplifies logistics, and enables very short time-to-market.