{"product_id":"hc-05-bluetooth-module","title":"HC-05 Bluetooth Module","description":"\u003cmeta name=\"description\" content=\"Buy HC05 Bluetooth Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003eHC-05 Bluetooth Module\u003c\/h1\u003e\n\u003cp\u003eThe HC-05 is a versatile Bluetooth SPP (Serial Port Protocol) module designed for seamless wireless serial communication. Operating on the standard Bluetooth v2.0+EDR protocol, this module supports both master and slave modes, making it ideal for two-way wireless data transfer between microcontrollers, Arduino boards, Raspberry Pi, and other embedded systems. Available now at The Engineer Store, Bengaluru, with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule\u003c\/td\u003e\n\u003ctd\u003eHC-05 Bluetooth Serial Transceiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth Version\u003c\/td\u003e\n\u003ctd\u003ev2.0 + EDR (Enhanced Data Rate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e2.4 GHz ISM Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eUART \/ Serial (SPP - Serial Port Profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Mode\u003c\/td\u003e\n\u003ctd\u003eMaster \/ Slave (Configurable via AT Commands)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefault Baud Rate\u003c\/td\u003e\n\u003ctd\u003e9600 bps (Configurable: 1200 to 1382400 bps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 6V DC (On-board 3.3V regulator on breakout board)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Level\u003c\/td\u003e\n\u003ctd\u003e3.3V (5V tolerant on most breakout boards)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e30-40 mA (Paired\/Communicating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Current\u003c\/td\u003e\n\u003ctd\u003e~8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 10 meters (Class 2, open space)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmit Power\u003c\/td\u003e\n\u003ctd\u003e+4 dBm (Class 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e-80 dBm (Typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna\u003c\/td\u003e\n\u003ctd\u003eOn-board PCB trace antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, TXD, RXD, STATE, EN (KEY)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefault Pairing Code\u003c\/td\u003e\n\u003ctd\u003e1234 (or 0000, configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefault Device Name\u003c\/td\u003e\n\u003ctd\u003eHC-05 (Configurable via AT Commands)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Profiles\u003c\/td\u003e\n\u003ctd\u003eSPP (Serial Port Profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation\u003c\/td\u003e\n\u003ctd\u003eGFSK (Gaussian Frequency Shift Keying)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChipset\u003c\/td\u003e\n\u003ctd\u003eCSR BC417 (Cambridge Silicon Radio)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eOn-board (Fast blink = searching, Slow blink = paired\/connected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +75 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 37mm x 16mm (breakout board: ~44mm x 16mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~5-8 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, STM32, Raspberry Pi, PIC, 8051, and other UART-enabled devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVCC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower supply input (3.3V - 6V DC). The breakout board includes a voltage regulator, so 5V from Arduino works directly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGround connection. Connect to system ground.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTXD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransmit data pin. Connect to RX of your microcontroller. Outputs serial data at 3.3V logic.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRXD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReceive data pin. Connect to TX of your microcontroller. Accepts 3.3V logic (use voltage divider if using 5V MCU for safety).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSTATE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStatus output pin. Goes HIGH when the module is connected\/paired with another device.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEN (KEY)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnable\/AT Command mode pin. Pull HIGH (3.3V) before powering on to enter AT command mode at 38400 baud.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose the HC-05 Bluetooth Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster \u0026amp; Slave Modes:\u003c\/strong\u003e Unlike the HC-06 (slave only), the HC-05 can operate as both master and slave, enabling Bluetooth-to-Bluetooth module communication without a phone or computer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAT Command Configuration:\u003c\/strong\u003e Full control over device name, pairing password, baud rate, operating mode, and more through simple AT commands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play with Arduino:\u003c\/strong\u003e Connect VCC, GND, TX, and RX - upload a simple serial sketch, and you're wirelessly communicating in minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable 10m Range:\u003c\/strong\u003e Class 2 Bluetooth provides stable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy HC-05 Bluetooth Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHC-05 Bluetooth Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eHC-05 Bluetooth Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eHC-05 Bluetooth Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773623861411,"sku":"TES-EV102085","price":243.8,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/64_9e3acd81-1dc5-4eb5-b0d3-90a95508ecb2.png?v=1701073352","url":"https:\/\/www.theengineerstore.in\/zh-hant\/products\/hc-05-bluetooth-module","provider":"The Engineer Store","version":"1.0","type":"link"}