A version Bluetooth module, all the performance, function, package are fully compatible with our BC04 module, and you can fully replace HC06, HC05 with this one too.

Compare to all the bluetooth module currently in the market, this one remove the EEPROM IC for data and setting storage, save all the setting inside of the core IC, so the main advantage is cheap!

The price will be only $2.8 instead of $4.7 of the same BC04-B.


  • Using popular CSR Bluetooth chip, Bluetooth V2.1 + EDR protocol standards
  • Bluetooth class 2 standard.
  • On board PCB antenna
  • Build-in UART interface
  • Serial module operating voltage 3.3V, 15 meters from the general
  • Factory default baud rate 9600, users can set.
  • Module size is: 26.7mmx 13mm x 2.2 mm
  • Operating Current:
    • pairing: 2 ~ 30mA
    • paired with not communicating: 5 ~ 6Ma
    • communication: 10mA
  • For GPS navigation systems, utility meter reading systems, industrial control systems mining site.
  • Can be used with Bluetooth laptop, computer and Bluetooth adapters, PDA and other devices to connect seamlessly
  • BK3231 replaced CC2562 in recent version, fully same performace

Documentation please see on this page.

Additional information

Weight 0.008 kg

Bluetooth Solutions


1 review for EC04-B Bluetooth SPP Module BT2.1

  1. 5 out of 5

    conradj (verified owner)

    Great module, set it up within 5 min to send data to and from Arduino with Blueterm app on Android. Only soldering the wires onto the module was tricky.

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