HC-05 Bluetooth Module Wireless Serial Communication

Product Name

HC-05 Bluetooth Module – Wireless Serial Communication

Primary Function

Enables wireless serial communication over Bluetooth between microcontrollers and devices

Bluetooth Version

Bluetooth V2.0+EDR (Enhanced Data Rate)

Operating Voltage

3.3V (with onboard regulator, 5V tolerant input)

Communication Interface

UART (TX, RX) – Serial Port Protocol (9600 bps default, configurable via AT commands)

Modes of Operation

Master and Slave (configurable using AT Commands)

Default Baud Rate

9600 bps (can be adjusted from 1200 to 1382400 bps via AT mode)

Range

~10 meters (in open space, depending on environment)

Module Type

HC-05 with breakout board and onboard LED indicators

Key Features

Built-in AT command interface, onboard status LED, low power consumption, easy to integrate with microcontrollers like Arduino, ESP32, STM32

Applications

Wireless data logging, remote control systems, IoT device communication, home automation, wireless sensor networks

Compatible Platforms

Arduino, Raspberry Pi, ESP8266/ESP32, STM32, PIC, and other UART-based microcontrollers

Professional Use Case

Ideal for embedded engineers building wireless communication between devices or creating IoT prototypes with minimal hardware complexity

Expert Insight

HC-05 offers a cost-effective and stable wireless UART interface, popular for its ease of use and compatibility in both DIY and industrial-grade projects

Operating Temperature Range

-20°C to +75°C

Compliance

RoHS Compliant

Availability

In stock; available in single units and bulk for prototyping and production use