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BT44-191S Bluetooth Class 2 module with on-board antenna supporting Point-Point Point-Multipoint

The BT44-191S is a general purpose Bluetooth module incorporating an on-board meandering line antenna designed to be incorporated into an end product. The BC04 Bluetooth Module is a Class 2 Bluetooth module using BlueCore4-External chipset from Cambridge Silicon Radio, a leading Bluetooth chipset supplier. It provides a fully compliant Bluetooth system for data and voice communications. It interfaces with a host via UART (USB optional) and supports EDR data rate up to 3Mbps modulation modes. The module and device firmware are fully compliant with the Bluetooth specification V2.1.



  • Operating Frequency Band 2.40 GHz~2.48GHz unlicensed ISM Band
  • Bluetooth Spec. v2.1┬áCompliant EDR Enhanced Data Rate (EDR) compliant with v2.1.E.2 of specification for both 2Mbps and 3Mbps modulation modes
  • Class 2 type Output Power
  • Supports Firmware Upgrade via UART
  • Standard firmware supports SPP (Serial Port Profile) Profiles
  • Piconet support as MASTER available
  • Profiles for HID-Keyboard available
  • USB 2.0 and UART Host Interface
  • PCM Audio Interface
  • Low Voltage Power Supply, 2.7V to 3.6V
  • Built-in 8Mbit Flash Memory
  • RSSI value available from command mode
  • Low Power Modes Available: Park, Sniff, Hold and Deep Sleep
  • Surface-mount, Size: 31.0 x 14.5 x 1.8 mm
  • Surface-mount, Size: 27.0 x 14.5 x 1.8 mm (available without on-board antenna. PN# BT44-147)
  • Evaluation board available.