HC-08 BLE Master & Slave Bluetooth Module

HC-08 Bluetooth Module that can use master and slave modes as well as Bluetooth V4.0 BLE which can work with iOS and Android devices.

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Last Updated: 05/30/2024




Connect this Bluetooth 4.0 BLE Serial Bluetooth Module to have your Arduino or Raspberry Pi communicate wirelessly via Bluetooth 4.0 in both Master and Slave modes. Using this module your Raspberry Pi, Arduino or other microcontroller will be able to connect to other bluetooth devices using Bluetooth 4.0 such as iOS or Android phones and bluetooth enabled computers as a master or slave device! Perfect for medium range wireless communications up to 262 feet.

Pinout: (See connection diagrams in images above for Arduino & Raspberry Pi)

  • RST
  • 5V
  • GND: 0V
  • TX: transmit (to Arduino or Raspberry Pi)
  • RX: receive  (to Arduino or Raspberry Pi)
  • LED: Bluetooth Status Pin (by default this pin is high when bluetooth is connected, however, can be reversed to low when connected for power-saving via command mode)



  • BLE V4.0 Bluetooth Module
  • Protocol: Serial
  • Mode: Master or Slave (this module can act as a master or slave)
  • Range: 262 feet / 80 meters
  • Supply Voltage: 5V
  • TX & RX Signal Voltage: 3.3V
  • Transmit Power: 4dBm
  • Receive Power: -93dBm
  • Power consumption: (searching for connection) 21mA; 9mA (while transmitting)
  • Speed: 1Mbps
  • Dimensions: 3.6cm x 1.5cm 
  • Antenna: On-board
  • Supports AT commands
  • Adjustable role (master or slave), baud rate, device name, etc.
  • Works for communicating between Arduino or Raspberry Pi and iPhones or Android phones.
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