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                      1. Home
                      2. Wireless Modules & Adaptors
                      3. Communications & Networking Modules
                      4. Bluetooth Modules & Adaptors
                      Print Page

                      BT121-A-V2

                      Bluetooth 4.2, Module, 2.2V to 3.6V Supply, 400m Range, -96dBm Sensitivity

                      SILICON LABS BT121-A-V2
                      Image is for illustrative purposes only. Please refer to product description.
                      ManufacturerSILICON LABS
                      Manufacturer Part NoBT121-A-V2
                      Order Code2930671RL
                      Technical Datasheet

                      Data Sheet

                      See all Technical Docs
                      Packaging Options
                      No Longer Manufactured

                      Product Information

                      ManufacturerSILICON LABS
                      Manufacturer Part NoBT121-A-V2
                      Order Code2930671RL
                      Technical Datasheet

                      Data Sheet

                      Bluetooth VersionBluetooth 4.2
                      Supply Voltage Min2.2V
                      Supply Voltage Max3.6V
                      Signal Range Max400m
                      Data Rate-
                      Bluetooth Class-
                      Receive Sensitivity-96dBm
                      Operating Temperature Min-40°C
                      Operating Temperature Max85°C
                      Product Range-
                      SVHCNo SVHC (17-Dec-2015)

                      Product Overview

                      BT121 Bluetooth smart ready module with an integrated antenna. It is 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.

                      • Bluetooth 4.2 smart ready compliant
                      • Up to 6 x BR/EDR connections, up to 7 x BLE connections
                      • Integrated Bluetooth smart ready stack
                      • BGAPI™ serial protocol API over UART for network co-processor usage
                      • BGLIB™ host C library which implements BGAPI serial protocol
                      • UART host, 2 x SPI, UART and 2 x I2C peripheral interfaces
                      • Up to 22 x GPIO with interrupts, 4 x 12bit ADC interfaces
                      • Internal battery voltage measurement option
                      • 48MHz, 16KB RAM, 128KB flash ARM Cortex M0 microcontroller

                      Warnings

                      Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

                      Technical Specifications

                      Bluetooth Version

                      Bluetooth 4.2

                      Supply Voltage Max

                      3.6V

                      Data Rate

                      -

                      Receive Sensitivity

                      -96dBm

                      Operating Temperature Max

                      85°C

                      SVHC

                      No SVHC (17-Dec-2015)

                      Supply Voltage Min

                      2.2V

                      Signal Range Max

                      400m

                      Bluetooth Class

                      -

                      Operating Temperature Min

                      -40°C

                      Product Range

                      -

                      Technical Docs (3)

                      Product Change Notice EN

                      EOL Notices EN

                      Technical Data Sheet EN

                      Legislation and Environmental

                      Country of Origin:
                      Country in which last significant manufacturing process was carried outCountry of Origin:
                      China
                      Country in which last significant manufacturing process was carried out
                      Tariff No:85369090
                      US ECCN:5A992.c
                      EU ECCN:NLR
                      RoHS Compliant:Yes

                      RoHS

                      RoHS Phthalates Compliant:Yes

                      RoHS

                      SVHC:No SVHC (17-Dec-2015)
                      Download Product Compliance Certificate

                      Product Compliance Certificate

                      Weight (kg):.000979
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                      An Avnet Company© 2025 Premier Farnell Limited. All Rights Reserved.
                      element14 is a trading name of element14 India Private Limited.
                      Company identity number: U30009KA2007PTC044448 | Registered Office: D Block, 11th Floor, IBC Knowledge Park, 4/1,Bannerghatta Main Rd, Bhavani Nagar, Suddagunte Palya, Bangalore, Karnataka 560029, India.