Products

Lexi-R520

A compact LTE-M / NB-IoT module that delivers power-efficient connectivity, integrated positioning, and embedded application capability for space-constrained IoT devices.

Lexi-R520 overview

The Lexi-R520 module offers single-mode LTE-M and NB-IoT connectivity in a compact 16 x 16 mm form factor, based on the R52 chipset. It is designed for space-sensitive IoT applications that require reliable communication, integrated positioning, and local processing. With 23 dBm output power, it ensures strong signal performance, while features such as SpotNow and CellLocate enable efficient indoor/outdoor location tracking. The module supports LTE Cat M1 and NB2 across a full set of 3GPP Rel. 14/15 features.

Benefits

Compact, efficient footprint

Reduces board space by 40% compared to Sara-R520 while maintaining full LTE and positioning capabilities.

Robust connectivity

Delivers reliable communication at the cell edge with 23 dBm output power (PC3) across all supported bands.

Optimised positioning

SpotNow and CellLocate provide low-power, cost-effective location tracking without requiring external GNSS hardware.

Highlights

Compact LTE-M/NB-IoT design
Occupies just 16 x 16 mm PCB space, ideal for small devices with demanding size constraints.

Cost-efficient positioning
Delivers GPS-based tracking with SpotNow and fallback cell-based location via CellLocate — no GNSS receiver needed.

Secure and updatable
Includes secure boot, firmware-over-the-air (FOTA) support, and TLS/DTLS encryption for over-the-air reliability.

Long-term availability
Backed by full hardware and software ownership of the R52 chipset, ensuring lifecycle continuity and supply stability.

High transmission power
Power class 3 with 23 dBm output to ensure strong network coverage and minimise retransmissions.

Low power consumption
Supports power-saving features including eDRX and PSM for long battery life in remote and battery-operated devices.

Efficient data protocols
Enables lightweight, secure communication with MQTT, CoAP, HTTP, TCP/IP, and dual IPv4/IPv6.

Highlights

01:
Occupies just 16 x 16 mm PCB space, ideal for small devices with demanding size constraints.

03:
Delivers GPS-based tracking with SpotNow and fallback cell-based location via CellLocate — no GNSS receiver needed.

05:
Includes secure boot, firmware-over-the-air (FOTA) support, and TLS/DTLS encryption for over-the-air reliability.

02:
Power class 3 with 23 dBm output to ensure strong network coverage and minimise retransmissions.

04:
Supports power-saving features including eDRX and PSM for long battery life in remote and battery-operated devices.

06:
Enables lightweight, secure communication with MQTT, CoAP, HTTP, TCP/IP, and dual IPv4/IPv6.

Highlights

01:
Occupies just 16 x 16 mm PCB space, ideal for small devices with demanding size constraints.

02:
Power class 3 with 23 dBm output to ensure strong network coverage and minimise retransmissions.

03:
Delivers GPS-based tracking with SpotNow and fallback cell-based location via CellLocate — no GNSS receiver needed.

04:
Supports power-saving features including eDRX and PSM for long battery life in remote and battery-operated devices.

05:
Includes secure boot, firmware-over-the-air (FOTA) support, and TLS/DTLS encryption for over-the-air reliability.

06:
Enables lightweight, secure communication with MQTT, CoAP, HTTP, TCP/IP, and dual IPv4/IPv6.

07:
Backed by full hardware and software ownership of the R52 chipset, ensuring lifecycle continuity and supply stability.

08:

Benefits

Our partners

No items found.

Learn more

Proven success

No items found.

Use cases

Telematics and fleet management
Industrial automation and remote monitoring
Smart city and building infrastructure
Micromobility and connected healthcare
Payment terminals and unattended retail
Personal and pet tracking

Key features

No items found.

Get everything you need to know

Access all the specs, features, and integration options — download Lexi-R520 product materials.

Learn more

Costs

No items found.

Build smarter IoT solutions

Discover the tools and insights to build secure, efficient IoT solutions by exploring our developer resources.

Developer resources

Upgrade with Lexi-R520

The Lexi-R520 series combines compact LTE-M / NB-IoT connectivity with embedded computing and efficient positioning in one versatile module. Whether for wearables, tracking, or automation, it provides secure, low-power, and scalable communication to meet the evolving demands of modern IoT.

Explore how Lexi-R520 can enhance your connectivity and access additional product materials or request an evaluation kit for proof-of-concept testing. Contact us to learn more.