HC-05 Bluetooth Wireless Serial Arduino Module

The HC-05 is a widely used Bluetooth 2.0 module for wireless serial communication. Supports master and slave modes, ideal for Arduino and microcontroller projects.

SPECIFICATIONS:

• Bluetooth Version: 2.0 + EDR (Class 2)

• Frequency: 2.4GHz ISM band

• Operating Voltage: 3.6V–6V (typ. 5V)

• Logic Level: 3.3V (compatible with 5V)

• Default Baud Rate: 9600 (AT configurable)

• Interface: UART (TX, RX)

• Range: ~10m

• Roles: Master/Slave configurable

• LED: Blinking = waiting, steady = connected

• Dimensions: ~37mm × 15mm

• Pins: VCC, GND, TXD, RXD, EN

FEATURES:

• Master and slave mode support

• AT command configuration

• Onboard voltage regulator

• Status LED indicator

• Breadboard-friendly

TYPICAL APPLICATIONS:

• Wireless serial link between Arduinos

• Bluetooth-controlled robots

• Sensor data transmission

• DIY remote controls

PACKAGE INCLUDES:

• 1 x HC-05 Bluetooth Module (with adapter)