- LM540-0540, Long Range Bluetooth Adapter, v2.1 + EDR

LM540-0540, Long Range Bluetooth Adapter,  v2.1 + EDR 
SKU: 16635
Stock: 19
Delivery Time: Please check with us
Part Number: 540-0540 (AO)
Manufacturer/Supplier: LM Technologies
Specification 1: Bluetooth v2.1+EDR, Class 1
Specification 2: AO - adapter only
Specification 3: Range up to 787m with 2 dBi Antenna when paired with another LM540
Datasheet: http://www.lm-technologies.com/lm_downloads/LM540_DATASHEET.pdf

$ 30.00

Quantity 1-9 10-24 25+
Unit price$ 30.00 $ 28.40 $ 27.00

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LM540-0540, Long Range Bluetooth Adapter,  v2.1 + EDR (Adapter Only)

Host Controller Interface (HCI) via USB Interface. 

Please note that this product is being discontinued by LM and the replacement is the LM1010.

In order to acheive the long range capability, both adapters must be long-range adapters, either LM540 or LM1010.

The LM540 is qualified with Bluetooth 2.1 + EDR Standard and is available with or without support for the IVT Bluetooth software stack for use with a Windows PC or other operating system’s devices respectively.
The LM540 USB adapter has many uses due to the huge range of Bluetooth Classic profiles with which it is compatible. This adapter is specifically designed for applications like Bluetooth Proximity Marketing which need huge communication distances of up to 1000m. This range is achieved by coupling the LM540 with a long range antenna (LM251 or LM254 antenna). Similar products on the market are twice the size and require an external power supply. The LM540 has a small overall footprint allowing you to plug the adapter to a computer via USB without taking a lot of space. 


  • World’s Smallest Bluetooth USB Adapter with SMA Connector
  • Bluetooth ® v2.0 / v2.1 specification
  • Output 17.9dBm; with 2dBi Gain Antenna 19.9dBm
  • USB 2.0 (Full Speed) for data and power source
  • Range 787m; Connection & Pass Data tested between 2 x LM540 each with 2dBi Antenna (tested at Eaton Dorney Olympic Rowing Park Surrey, England.)
  • Compatible with GAP, SPP, HSP, HFP, DUN, FTP, FAX, PAN, LAN, HID, SYNC, HCRP, A2DP, AVRCP, BIP, GOEP, SDAP and OPP profiles
  • Plug and Play (OSX, Linux and Windows XP – 10 compatible)
  • IVT Bluesoleil 8.0 License Available. LM tested a range of Bluetooth stacks and found LM540 with IVT recorded the lowest latency
  • FCC and CE/ R&TTE Certified Solution
  • RoHS, REACH and WEEE Compliant Solution