The HC-06 is a compact and easy-to-use Bluetooth 2.0 SPP (Serial Port Protocol) module designed for seamless wireless communication between your microcontroller and Bluetooth-enabled devices. Ideal for Arduino, Raspberry Pi, and other microcontrollers, the HC-06 supports a simple serial interface (UART) and operates at 3.3V logic with a wide input voltage range of 3.6–6V. With built-in firmware and AT command support for easy configuration, this module enables wireless control, data transfer, and debugging over short-range Bluetooth connections. It’s perfect for DIY electronics, robotics, home automation, and wireless data logging projects. Key Features: Bluetooth 2.0 SPP protocol Baud rate: 9600 (default), configurable via AT commands Operating voltage: 3.6–6V (3.3V logic level) Compact size with onboard status LED Simple 4-pin interface: VCC, GND, TX, RX Range: Up to 10 meters (open space) Works with Android (not iOS) Unlock wireless serial communication with the reliable and affordable HC-06 module—perfect for getting started with Bluetooth in your projects.