Bluegiga WT41u Long Range Bluetooth® Module

The World's Longest Range Bluetooth Module

The WT41u is a fully integrated Bluetooth 2.1 + EDR, class 1 module combining antenna, Bluetooth radio, and an on-board iWRAP Bluetooth stack. The  WT41u is a replacement for the WT41. The WT41u provides a superior 110 dB link budget and more than 1000-meter line-of-sight connectivity for Bluetooth applications where extreme radio performance or reliability is required. It also constitutes an ideal solution for developers that want to quickly integrate extremely high performing Bluetooth wireless technology into their design without investing several months in Bluetooth radio and stack development. The WT41u uses Bluegiga's iWRAP Bluetooth stack, which is an embedded Bluetooth stack implementing 13 different Bluetooth profiles and Apple iAP connectivity. By using WT41u combined with iWRAP Bluetooth stack and Bluegiga's excellent technical support, designers ensure quick time-to-market, and low development costs and risks.

Module Benefits

Superior radio performance:

  • 110 dB link budget provides 1000+ meter line-of-sight connectivity

Co-existence with Bluegiga's Wi-Fi products

Fully integrated Bluetooth solution:

  • Low development costs
  • Fast time-to-market

On the field upgradeable

Bluetooth, CE, FCC, IC, Japan, and South Korea qualified:

  • Proven interoperability
  • No qualification costs

Module Specifications

Radio Features:

  • Bluetooth v.2.1 + EDR
  • Bluetooth class 1 radio
  • Transmit power: +20 dBm
  • Receiver sensitivity: -90 dBm
  • Range: 1000+ meter line-of-sight
  • Integrated chip antenna or U.FL connector

Hardware Features:

  • UART and USB host interfaces
  • 802.11 co-existence interface
  • 6 software programmable IO pins
  • Operating voltage: 2.7 V to 3.6 V
  • Temperature range: -40°C to +85°C


  • Dimensions: 35.55 mm x 14.50 mm x 5.65 mm
  • Bluetooth
  • CE
  • FCC and IC
  • Japan
  • South Korea
  • Bluegiga iWRAP Bluetooth stack
  • A2DP, AVRCP 1.5, HFP 1.6, and HSP
  • 13 Bluetooth profiles
  • Apple iAP support
  • HCI over UART or USB


Getting Started with WT41u Long Range Bluetooth Module

WT41u Long Range Bluetooth Development Kit

The easiest way to begin development with the WT41u Bluetooth Module is with the WT41u Long Range Bluetooth Development Kit.

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Title Version Resource Type
AN990: Bluetooth® Serial Port Profile iWRAP 1.2 Application Notes
WT41 Evaluation Kit Data Sheet 1 Data Sheets
WT41u Development Kit Design Material
WT41u PADS Decals Reference Designs
WT41u ISEDC Test Report and Grant Miscellaneous
WT41u FCC Test Report and Grant Miscellaneous
WT41u CE Test reports and DoC Miscellaneous
WT41u Japan Test Report and Certificate Miscellaneous
WT41u Data Sheet 1.1 Data Sheets
iWRAP 5.0.2 Software Release Notes 5.0.2 Release Notes
iWRAP5.x and iWRAP6.x Release Notes Release Notes
iWRAP6 Presentation Presentations
Bluetooth, Wi-Fi and Regulatory Certifications 3 Presentations
BGTerm Terminal Software (Supports iWRAP MUX Protocol) Software
USB Development Driver for Windows Software
iWRAP5.x and iWRAP6.x Software Releases 5.7 / 6.2 Software
iWRAP6 API Reference Manual for WT 3.8 Reference Manuals
Bluetooth, Wi-Fi and Regulatory Certifications Miscellaneous
Compare iWRAP Software Versions Miscellaneous
PCM Configuration Tool Miscellaneous
SPI Programming Cable Schematics Schematic and Layout Files
iAP Reference Application v1.1 Miscellaneous
BlueSuite 2.5 (Blueflash, PSTool, BlueTest etc.) 2.5 Software
Wireless Selector Guide 7 Brochures
UG305: Dynamic Multiprotocol User's Guide 0.2 User Guides
UG103.16: Multiprotocol Fundamentals 0.1 User Guides
PB #1606031: Inner Box Label Change Product Change Notifications (PCN)
17052273 Relocation of Singapore Test Centre and Order Fulfillment Centre, Modules Product Change Notifications (PCN)
Contact Sales Contact Sales
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