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Bluetooth® 5.0 Dual Mode Serial Adapter

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LM Technologies
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 Product Description

LM068 Bluetooth® 5.0 Dual Mode RS232 Serial Adapter Standalone (With Embedded Bluetooth® 5.0 Stack)

The LM068 is the world’s smallest Bluetooth® 5.0 serial adapter (RS232), providing a secure and reliable Bluetooth® 5.0 connection.

Designed to replace RS232 cables between a master (DTE) device and slave (DCE) devices such as printers, data loggers and digital signalling devices.

This standalone adapter incorporates a micro-controller unit with an 8 Mbit flash memory for running the application. The firmware controls the RS232 signals, including DTR / DSR handshaking and RTS / CTS flow control lines.

The AT Command set is used to change the configurations, plus the developer can also configure and modify the settings of a remote LM068 from a local LM068. Customised configurations and settings can be preloaded to the LM068, simplifying the manufacturing and testing process.

LM Technologies also offer Bluetooth® Dual Mode applications, which can be customised to your specification. The module can be used as a bridge between Bluetooth® 5.0 and is backward compatible with 2.0, v2.1 and Bluetooth® v4.0, v4.1 devices, using our SPP to Serial Bridge application.

LM Technologies also offer SPP with GAP Central and SPP or GAP Peripheral applications.


Main Features:

  • World’s smallest Bluetooth® 5.0 Dual Mode Serial Adapter
  • Class 1
  • DTE / DCE (Master / Slave) mode switch
  • DTR / DSR Handshaking and RTS / CTS Flow control lines
  • Full Duplex for simultaneous communication between sender and receiver
  • Low Power Consumption
  • Over-the-Air Upgrade (OTAU) available
  • Application firmware support


Typical Industries:

  • EPOS
  • Aviation
  • M2M
  • Automotive
  • LNG


Bluetooth® Serial Adapter Class 1 – LM048 Certification

The LM048 Bluetooth® RS232 adapter has been certified in the following countries;

FCC USA, R&TTE CE EU, ANATEL Brazil, TELEC Japan, KCC Korea, SRRC China, WPC India, IC Canada, Singapore, Israel, Thailand, Taiwan, Malaysia, Australia, New Zealand and Mexico.

It has also met the industry standards that need specialist certification which are: Automotive 2004/104/EC, EMC and SIG BQB Certifications.

The LM048 Bluetooth serial adapter is widely used within the serial printer market and the LM048’s have gained approval from many POS / EPOS industry manufacturers: Star Micronics, Epson, SNBC, Orient, Toshiba and Sharp.



icon-pdf2.gif LM068 Datasheet

icon-pdf2.gif LM068 Webpage

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