Bluegiga BLE121LR Bluetooth® Smart Long Range Module

World's Longest Range Bluetooth Smart Module

BLE121LR is a Bluetooth Smart Long Range module targeted for Bluetooth Smart applications where the best possible RF performance and range are required. At +8 dBm TX power and -98 dBm sensitivity BLE121LR has best-in-class RF performance and can provide Bluetooth Smart connectivity up to 450 meters. BLE121LR integrates all features required for a Bluetooth Smart application: Bluetooth radio, software stack and GATT based profiles, and it can also host end user applications, which means no external microcontroller is required in size, price or power constrained devices.

BLE121LR Bluetooth Smart module also has flexible hardware interfaces to connect to different peripherals or sensors. Although BLE121LR Bluetooth Smart Long Range Module is targeted for applications requiring high RF performance, it is still has relatively low power consumption and can be powered using a standard 3 V coin cell battery.

Module Benefits

Best-in-Class Radio Performance:

  • +8 dBm TX power and -98 dBm sensitivity
  • up to 450 meter range


  • Firmware is field upgradeable
  • Application data can be stored on the flash
  • Settings can be stored on the flash

Fully Integrated Bluetooth Smart Solution:

  • Integrated Bluetooth Radio, microcontroller and software stack
  • Fast time to market
  • Low development risks

Bluetooth and Regulatory Qualifications:

  • Proven interoperability
  • Minimal qualification costs

Application Hosting Capabilities:

  • All application code can be executed on the BLE121LR
  • No need for external micro controller
  • Lower cost and smaller physical size

Module Specifications


  • Bluetooth Smart (low energy) support
  • L2CAP, ATT, GATT, GAP and Security Manager
  • Bluetooth Smart profiles
  • Client and master mode 
  • Up to 8 connections in master mode
  • 100 kbps+ throughput
  • Over-the-Air firmware upgrade

Hardware Features:

  • UART host interface
  • SPI, I2C, PWM, UART, GPIO peripheral interfaces
  • 12-bit ADCs
  • Temperature range: -40°C to +85°C
  • Dimensions: 13.0 mm x 14.7 mm x 1.8 mm
  • Power supply: 2.0 - 3.6 V


  • Bluetooth 4.0 low energy radio
  • Transmit power: +8 dBm
  • Receiver sensitivity: -98 dBm
  • Integrated antenna
  • TX peak current: 36 mA
  • TX peak current: 25 mA (with DC/DC)
  • RX peak current: 33 mA
  • Sleep mode current: 0.5 uA

MCU Features:

  • 8051 microcontroller
  • 8 kB RAM
  • 256 kB

Software Features:

  • Embedded Bluegiga Bluetooth Smart Stack
  • BGAPI™ host protocol
  • Onboard application support with Bluegiga BGScript™ or with ANSI C using IAR Embedded Workbench SDK
  • Bluegiga Profile Toolkit™ for developing Bluetooth Smart profiles


  • Bluetooth
  • CE
  • FCC
  • IC
  • Japan
  • South Korea

Getting Started with BLE121 Bluetooth Smart Long Range Module

DKBLE Bluetooth Smart Development Kit

The easiest way to begin development with BLE121 Bluetooth Smart Long Range Module is with the DKBLE Bluetooth Development Kit.

Add to Cart

BLE121LR Bluetooth Smart Long Range Module

Part Number Buy Module Data Sheet Development Kit TX Power (dBm) RX Sensitivity (dBm) Typical Range MCU Core Dimensions (mm)
BLE121LR DKBLE +8 -98 250-450 Meters 8051 14.7 x 13.0 x 1.8


Title Version Resource Type
Developing Accessories with Bluetooth Smart Presentations
Bluetooth Smart Software v.1.4 Presentation Presentations
AN1140: Bluetooth Mesh for Android ADK 0.1 Application Notes
Bluetooth Smart Technology Presentation Presentations
Bluetooth Solutions for Apple iOS Devices Presentations
Bluetooth End Product Listing Guide Presentations
BLE121LR CE Test Reports and Doc Miscellaneous
BLE121LR Product Presentation Presentations
Developing Long Range Bluetooth Smart Devices Presentations
Bluetooth Smart Software and SDK v.1.4.2 1.4.2 Software
Bluetooth Smart Software and SDK v.1.3.2 1.3.2 Software
Bluetooth Smart Software and SDK v.1.5.0 1.5.0 Software
AN980: Developing Your First Bluetooth® Smart Application 2.0 Application Notes
BLE121LR KCC Report and Certification Application Notes
AN983: Bluetooth® 4.0 Heart Rate Sensor 1.4 Application Notes
AN984: Implementing Over-the-Air Firmware Upgrade 1.7 Application Notes
AN981: Bluetooth® Smart Cable Replacement 1.5 Application Notes
AN982: Bluetooth® Smart Glucose Sensor 1.0 Application Notes
AN985: BLE112, BLE113, and BLE121LR Range Analysis 1.1 Application Notes
Bluetooth Smart Software API Reference Manual for BLE Version 1.3 3.5 Reference Manuals
Bluetooth Smart Software API Reference Manual for BLE Version 1.4 3.6 Reference Manuals
Bluetooth Smart Software API Reference Manual for BLE Version 1.5 3.10 Reference Manuals
BLE121LR Data Sheet 1.2 Data Sheets
UG214: DKBLE User Guide 1.0 User Guides
UG209: BGSCRIPT Scripting Language Developer Guide 4.1 User Guides
UG208: BLEGUI Application User Guide 1.7 User Guides
DKBLE Main Board Design Files Reference Designs
DKBLE Carrier Board Design Files Reference Designs
BLE121LR Japan Report and Certificate Miscellaneous
BLE121LR FCC Report and Grant Miscellaneous
BLE121LR Bluetooth Report and Certificate Miscellaneous
BLE121LR Industry Canada Certificate Miscellaneous
BLE Android Demo App (.apk file) Miscellaneous
ATEX List of Components Miscellaneous
BLE Cable Replacement and Heart Rate Demo App for Apple iOS (source code) Miscellaneous
BLE Android Demo App (source code) Miscellaneous
BLE Update Tool v1.3.9 (Windows XP,7,8 and 10) 1.3.9 Miscellaneous
Bluetooth Smart Software and SDK v.1.6.0 1.6.0 Software
Bluetooth Smart Software API Reference Manual for BLE Version 1.6 1.6 Reference Manuals
UG210: Bluetooth® Smart Module Configuration Guide 3.11 User Guides
Bluetooth Smart Software Release Notes 4.6 Release Notes
BLE121LR Brazil Anatel Test Reports and Certificates Miscellaneous
UG211: Bluetooth Smart Profile Toolkit Developer Guide 3.11 User Guides
180822330 Module Label Change - RoHS Label Only Product Change Notifications (PCN)
Wireless Selector Guide 7 Brochures
PB #1606031: Inner Box Label Change Product Change Notifications (PCN)
AN1160: Project Collaboration with Simplicity Studio 0.1 Application Notes
AN1134: Dynamic Multiprotocol Development with Bluetooth® and Proprietary 0.1 Application Notes
AN1135: Using Third Generation Non-Volatile Memory (NVM3) Data Storage 0.5 Application Notes
AN1133: Dynamic Multiprotocol Development with Bluetooth and Zigbee 0.2 Application Notes
17052273 Relocation of Singapore Test Centre and Order Fulfillment Centre, Modules Product Change Notifications (PCN)
PB #1612051: Additional assembly test ship site for BLE121LR Product Change Notifications (PCN)
Wireless IoT Modules Master Errata for Shield Marking 1.0 Errata
Contact Sales Contact Sales
Loading Results