Silicon Labs – Bluetooth Dual Mode Smart Ready Module

Product Overview

BT121 is a Bluetooth Smart Ready module targeted for applications that require both Bluetooth Smart and Classic connectivity. It can connect to legacy devices that only support Bluetooth SPP or Apple iAP2 profiles as well to devices that support Bluetooth Smart.

BT121 integrates a high performance Bluetooth radio, a low-power ARM Cortex micro-controller and a Bluegiga Bluetooth Smart Ready stack software marking it extremely easy-to-use as no RF or Bluetooth software development is needed.

BT121 can be used as a modem together with a separate host MCU, but applications can also be embedded into the built-in ARM Cortex MCU with the Bluegiga BGScriptTM scripting language


Bluetooth Smart Ready compatible
– Connectivity to both Bluetooth BR/EDR and Smart devices

Excellent RF performance
– Robust and long range connectivity

Integrated Bluetooth stack software and profiles
– No Bluetooth development needed

On-board applications with BGScriptTM
– BoM and size savings, since no external MCU needed

Flash based
– Software is field upgradable
– Applications and data can be stored in the module

Bluetooth and regulatory qualifications
– Proven interoperability
– Minimal qualification costs



Development Kit for BT121

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Bluetooth Dual Mode Smart Ready Module

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