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, and is compatible with MQTT Anywhere and MQTT Flex to reduce data overhead and maximise device uptime.

Benefits

Compact, efficient footprint

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

Onboard application support

Run customer applications directly on the uCPU within the R52 chipset, reducing the need for an external host MCU.

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.

Power-efficient communication

Compatible with MQTT Anywhere and MQTT Flex to reduce airtime, data usage, and energy consumption.

Highlights

01:

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

03:

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

05:

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

07:

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

02:

Integrated application engine: Supports customer applications on-chip using the R52’s uCPU functionality.

04:

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

06:

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

08:

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

Highlights

01:

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

03:

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

05:

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

02:

Integrated application engine: Supports customer applications on-chip using the R52’s uCPU functionality.

04:

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

06:

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

Highlights

01:

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

02:

Integrated application engine: Supports customer applications on-chip using the R52’s uCPU functionality.

03:

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

04:

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

05:

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

06:

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

07:

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

08:

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

Benefits

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Proven success

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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

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Get everything you need to know

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

Learn more

Costs

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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.

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