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The HC‑05 Bluetooth Serial Module is a versatile V2.0+EDR Bluetooth transceiver that supports both master and slave modes. Operating on 3.6–6 V, it communicates via UART (default 9600 baud) and allows wireless serial communication up to ~10 m. Popular for wireless data transmission between microcontrollers, PCs, GPS, and more. Easy to configure via AT commands, ideal for Arduino, ESP32, robotics, and IoT projects. |
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