BL54L15µ

Bluetooth Module

The BL54L15u is a compact, cloud-ready Bluetooth module that helps you bring connected products to market faster.

Product Brief (PDF)
Ezurio white logo and Module

Compact. Connected. Ready to Build.

The Ezurio BL54L15µ — the smallest member of the BL54L15 Series — is a compact, cloud-ready Bluetooth module designed to get your connected products to market faster. Developed by Ezurio and supported by Blecon, it combines expertly designed, pre-certified hardware with support for Bluetooth cloud connectivity.

Ezurio removes the complexity of RF design and global radio certification. Blecon eliminates the need to build your own Bluetooth network infrastructure, enabling secure, scalable cloud connectivity right out of the box.

 
 

Powered by the Blecon Network

The BL54L15u connects to the cloud through the Blecon Network using any nearby Blecon-enabled Hotspot including phones, laptops, tablets or gateways. No pairing. No custom infrastructure.

The Blecon Network enables:

  • Secure device identity, bi-directional communication, geolocation and global time
  • Flexible deployment of network coverage using roaming Bluetooth hotspots
  • OTA updates for firmware and device functionality
  • Integration with cloud services out of the box using developer-friendly APIs and SDKs
Blecon Enabled Hubspots
 

Built on Next-Generation Hardware

At the core of the BL54L15µ module is the Nordic Semiconductor nRF54L Series system-on-chip (SoC), offering high performance, low power operation and advanced Bluetooth capabilities in a compact form factor. Combined with Blecon’s cloud connectivity, it enables developers to build connected products without the typical complexity of RF design or building a connectivity network infrastructure.


The BL54L15µ measures just 6.3 × 7.9 mm, supports industrial temperature ranges, and comes pre-certified for global radio markets, making it ideal for integration into a wide range of commercial and embedded applications.

Mechanical Details – Chip Antenna variant (453-00223)-1
 

Accelerate Bluetooth IoT Development

The BL54L15µ speeds up development and deployment by combining pre-certified hardware with ready-to-use cloud connectivity.

  • Bring Bluetooth cloud-connected products to market faster - Pre-certified hardware and cloud connectivity support remove RF and network infrastructure complexity
  • Develop secure, scalable connected devices out of the box - Secure identity, OTA updates and encrypted 2-way communication
  • Deploy without custom network infrastructure - Use existing Bluetooth infrastructure as hotspots to connect devices at scale
The BL54L15μ development board with text
 

Built for Integration

The BL54L15µ can easily integrate into modern cloud applications. It enables secure, timestamped data delivery over Bluetooth, with APIs and SDKs designed to fit into your existing systems and workflows.

Popular integrations include:

  • AWS (S3, SQS, EventBridge)
  • Memfault for device observability and OTA
  • Edge Impulse for embedded machine learning

 

Blecon integrations 2

BL54L15µ Technical Overview

Specification Summary
System processor Nordic nRF54L15 Series system-on-chip (SoC)
Core 128 MHz ARM Cortex M33 + RISC-V
Memory 1.5 MB Flash, 256 KB RAM
Dimensions 6.3 × 7.9 × 1.75 mm
Antenna Options Integrated chip antenna or RF pad
Operating Voltage
 1.7V – 3.6V
Operating Temperature
 -40°C to +105°C
Certifications FCC, ISED, CE, UKCA, RCM, MIC, KC

 

Ezurio white logo and Module

 

Ready to design using the BL54L15µ?

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