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Bluetooth to UART module industrial  master-slave BC04-B

Bluetooth to UART module industrial master-slave BC04-B



BLK-MD-BC04-B is a powerful bluetooth module with serial port. It uses Blue2.0, supports master/slave mode, supports soft/hardware for master/slave mode setting, supports up to 29 AT commands and 9 automatic feedback instructions, supports 1200~1382400 baud rate ect.

29 AT control commands + 9 automatic feedback instructions bring you the most powerful bluetooth serial solutions!

Product features:

  • Support bluetooth standard v2.1 + EDR.
  • Supports soft/hardware for master/slave mode setting.
  • Through the AT command, yon can set the control parameters of the module and issue orders to the module.
  • Working state instructions.
  • Suitable for embedded serial transmission wireless alternative.
  • On-board efficient antenna.
  • Support connecting seven slave equipment.

Shape dimension figure

Bluetooth serial interface application circuit:

Master/slave mode setting and other configuration:

1.     master/slave mode setting

BLK-MD-BC04-B bluetooth module supports setting the master/slave mode by soft or hardware. The method is as follows:

PIO(4)——soft/hardware setting: Low level(or impending) for hardware setting master-slave mode; High level3.3Vfor soft setting master-slave mode.

PIO(5)——master-slave mode setting interface by hardware. 3.3V high level for master mode, GND(or impending) for slave mode.

If you select soft setting the master-slave mode, use the AT commands, see “BLK-MD-BC04-B bluetooth module AT commands instruction”.

2.     state instructions LED: PIO(1)

Show the state of the bluetooth module, the LED’s flashing way and the state of bluetooth module see below:

3.   Host interrupts instruction LED: PIO(2)

Used to indicate if the host interrupt or not, if connection it is high level, other state is low level.

4.     Memory clear or restore default button: PIO(3)

This button is a multifunction button, with the functions of memory clear (short press) and restore default values (long press for 3s). Memory clear is to clear last bluetooth address in the memory. Restoring the default value is to restore module initial default values.

The product specification:

Ø Bluetooth protocol:    Bluetooth Specification v2.1+EDR

Ø USB protocol:    USB v1.1/2.0

Ø Frequency:    2.4GHz ISM band

Ø Modulation:   GFSK(Gaussian Frequency Shift keying)

Ø Transmission power:  ≤4dBm, Class 2

Ø Sensitivity:   ≤-84dBm at 0.1% BER

Ø Rate: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps

Ø Security features: Authentication and encryption

Ø Support profiles:  SPP(master & slave)

Ø Power supply:  +3.3VDC 50mA

Ø Working temperature:  –20 ~ +55 Centigrade

Ø Size:  26.7mm x 13mm x 2.2 mm

The firmware has upgraded to the latest version now:

² Serial baud rate default for: 9600dps

² The matchmaking password: 1234

² The default name: BOLUTEK

Provided files: “BLK-MD-BC04-B bluetooth module’s specification instruction manual” and “AT instruction manual”. 

Add to Cart:

  • Model: bluetooth
  • 85 Units in Stock
  • Manufactured by: SOLID Technologies