Long Range Bluetooth Smart Module

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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.

• Smart home accessories
• beacon devices
• Health and fitness sensors
• Medical sensors
• iPhone and iPad accessories
• Security and proximity tags

Symmetry Electronics is an authorized Silicon Labs distributor.


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Bluetooth v. 4.0 Single Mode Compliant
o Master and slave modes
o Up to eight connections
Integrated Bluetooth Smart Stack
o Bluetooth Smart profiles
Best-in-Class RF Performance
o Transmit power : +8 dBm
o Receiver sensitivity: -98 dBm
o Range up to 450 meters
Low Current Consumption
o Transmit: 36 mA (+8 dBm)
o Receive: 33 mA (-98 dBm)
o Power mode 3: 0.5 uA
Flexible Peripheral Interfaces
o UART and SPI
o I2C, PWM and GPIO
o 12-bit ADC
Host Interfaces:
Programmable 8051 Processor for Stand-alone Operation
o Simple Bluegiga BGScript scripting language for quick application development
o Bluegiga Profile Toolkit allowing the quick development of GATT based profiles
Dimensions: 14.7 x 13.0 x 1.8 mm
Bluetooth, CE, FCC, IC, South Korea and Japan qualified

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Long Range Bluetooth Smart Module
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Long Range Bluetooth Smart Module