Bluetooth Modules — HC-05, HC-06, BLE 4.0 and NRF Wireless Modules for Arduino

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.bt-collection-content { max-width: 1180px; margin: 0 auto; padding: 20px 15px; font-family: inherit; line-height: 1.7; color: #222; } .bt-collection-content h2, .bt-collection-content h3 { margin-top: 28px; margin-bottom: 12px; line-height: 1.35; color: #111; } .bt-collection-content p { margin-bottom: 14px; } .bt-quick-answer { background: #f5f9ff; border-left: 5px solid #1d67d8; padding: 18px 20px; margin: 20px 0; border-radius: 8px; } .bt-quick-answer h2, .bt-key-takeaways h2 { margin-top: 0; font-size: 22px; } .bt-key-takeaways { background: #f8fff4; border-left: 5px solid #3a9b35; padding: 18px 20px; margin: 22px 0; border-radius: 8px; } .bt-key-takeaways ul, .bt-collection-content ul { padding-left: 22px; margin-bottom: 15px; } .bt-key-takeaways li, .bt-collection-content li { margin-bottom: 8px; } .bt-table-wrap { width: 100%; overflow-x: auto; margin: 18px 0 26px; } .bt-table { width: 100%; border-collapse: collapse; min-width: 720px; background: #fff; } .bt-table th { background: #121826; color: #fff; font-weight: 600; } .bt-table th, .bt-table td { border: 1px solid #ddd; padding: 11px 12px; text-align: left; vertical-align: top; } .bt-table tr:nth-child(even) { background: #fafafa; } .bt-note { background: #fff8e6; border-left: 5px solid #f0a000; padding: 15px 18px; border-radius: 8px; margin: 18px 0; } .bt-faq { margin-top: 30px; } .bt-faq-item { border-bottom: 1px solid #e5e5e5; padding: 15px 0; } .bt-faq-item h3 { margin: 0 0 8px; font-size: 18px; } .bt-faq-item p { margin: 0; } Quick Answer A Bluetooth module is a compact wireless communication board that enables microcontrollers such as Arduino, ESP32, and Raspberry Pi to send and receive data wirelessly over the 2.4GHz band using Bluetooth Classic 2.0 or Bluetooth Low Energy BLE 4.0 protocols. KitsGuru stocks 18 Bluetooth and NRF wireless modules , including HC-05, HC-06, HM-10 BLE 4.0, NRF51822, and Bluetooth audio boards , priced from Rs 113 to Rs 1,099 . Classic UART modules such as HC-05 and HC