Building Information

LM's Bluetooth® to serial adapters have been used within building automation to enable wireless RS232 and RS485 cable-replacement solutions for almost a decade now.

The resilient frequency-hopping nature of Bluetooth and the pass-through and fully direction independent aspects of our LM048 and LM058 Bluetooth® serial adapters have allowed customers to utilise them to carry both legacy and modern serial protocols such as DALI, BACnet, S-Bus and KNX.

With the advent of the IoT and the advancement of technologies, the building automation industry is witnessing a renewed demand for intelligent connectivity, including wireless and mesh options. LM offers an extensive range of products and technologies to support automation.


Bluetooth® v2.1 Serial Port Profile

Bluetooth® v2.1 provides throughput of up to 2Mbps and is highly-resilient to RF interference due to its frequency-hopping behaviour. The Bluetooth® Serial Port Profile (SPP) enables transparent pass-through of serial data including flow-control signals at ranges typically exceeding that of WiFi. LM utilises SPP within its Bluetooth® v2.1 and v4.x Serial Adapters and Modules, which uniquely support flow-control in both directions.

Suggested Products

  • LM048 Bluetooth® RS232 Serial Adapter
  • LM058 Bluetooth® RS232 Serial Adapter with SMA Antenna
  • LM506 Bluetooth® USB Adapter

Bluetooth 4.x SMART Low-Energy Mesh

Bluetooth® low energy is designed for infrequent control signalling and reporting over a normally inactive low-bandwidth connection. This behaviour enables ultra-low power consumption, opening-up wireless connectivity to battery operated devices (including emergency backups) at ranges typically exceeding that of WiFi. The addition of Mesh in the upcoming Bluetooth® standard adds extreme resilience and range to deployments by connecting devices in a web-like structure, solving the problem of range whilst adding several channels of redundancy.

How We Helped

With the advent of the Internet of Things (IoT) and advancements in technologies, the building automation industry is experiencing a great demand for intelligent connectivity, including Bluetooth, wireless and mesh options, including vehicle to Infrastructure (V2I) and safety standards.


To find out more about our previous projects please talk to our team


LM has designed and created solutions for many industry sectors including POS & EPOS, Medical, Audio, Home Automation, Smart Sensors and more.


LM offers hardware services ranging from circuit and antenna design advice, to full product development. For our confidential and expert advice,


LM offers software design services and has a range of mobile applications. These apps provide mobile solutions to be used in parallel with our adapters and modules.


LM provides a range of profiles and custom firmware options that work with our adapters and modules and can be written to interface with your solution.

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