HC-05 Bluetooth Module

180.00 EGP

In stock

Very simple Bluetooth module to connect it with your microcontroller, Arduino, Raspberry Pi, or any MCU board using the TTL UART interface

This serial bluetooth module can work as either master or slave. This module also includes the base board, not only the core board, most functions are pre-set, so only the serial port communication is available but it’s more easy to use. It can be used also with arduino or Microcontroller.




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SKU: WL-22550 Category: Tags: ,

Bluetooth Module

HC-05 Technical Specifications

  • Use CSR popular bluetooth chip, bluetooth V2.0 Protocol standard.
  • Baud rate set at 9600, but you can change it with AT command
  • Operation current, pairing at 30MA, after pairing is 8 MA during communication
  • Widely use for wireless data communication such as GPS navigation device, remote data collection, PDA devices
  • Also can pair and communicate with laptop, laptop bluetooth adapter, PDA devices, Arduino
  • Serial Bluetooth module for Arduino and other micro-controllers
  • Operating Voltage: 4V to 6V (Typically +5V)
  • Range: <100m
  • Follows IEEE 802.15.1 standardized protocol
  • Uses Frequency-Hopping Spread spectrum (FHSS)
  • Can operate in Master, Slave or Master/Slave mode
  • Can be easily interfaced with Laptop or Mobile phones with Bluetooth


HC-05 Default Settings


  • Default Bluetooth Name: “HC-05”
  • Default Password: 1234 or 0000
  • Default Communication: Slave
  • Default Mode: Data Mode
  • Data Mode Baud Rate: 9600, 8, N, 1
  • Command Mode Baud Rate: 38400, 8, N, 1
  • Default firmware: LINVOR

Pin Configuration

Pin Number Pin Name Description
1 Enable / Key This pin is used to toggle between Data Mode (set low) and AT command mode (set high). By default it is in Data mode
2 Vcc Powers the module. Connect to +5V Supply voltage
3 Ground Ground pin of module, connect to system ground.
4 TX – Transmitter Transmits Serial Data. Everything received via Bluetooth will be given out by this pin as serial data.
5 RX – Receiver Receive Serial Data. Every serial data given to this pin will be broadcasted via Bluetooth
6 State The state pin is connected to on board LED, it can be used as a feedback to check if Bluetooth is working properly.
7 LED Indicates the status of Module

  • Blink once in 2 sec: Module has entered Command Mode
  • Repeated Blinking: Waiting for connection in Data Mode
  • Blink twice in 1 sec: Connection successful in Data Mode
8 Button Used to control the Key/Enable pin to toggle between Data and command Mode


Package Included

  • 1 x HC-05 Bluetooth Module
Bluetooth Module
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