Integrated Bluetooth Technology: Utilize advanced Bluetooth modules HC-05, designed for seamless wireless communication. These modules can operate either in master or slave mode, making them versatile for various Arduino-based applications. Wide Compatibility: Suitable for hobbyists and professionals, these modules are compatible with a range of Arduino boards and setups, ensuring easy integration into your existing projects. Robust Serial Communication: Facilitate reliable serial communication for your devices, ideal for DIY electronics and robotics projects, enhancing connectivity and control. Due to different batches, there may be differences in product appearance and printed text, which will not affect functionality. Color: As Shown Material: PCB Package Contents: 1 × HC-05 Bluetooth Module Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is ±1–3 cm.