{"product_id":"elm-327-v2-1-obdii-bluetooth-interface-auto-car-diagnostic-scanner-module","title":"ELM 327 V2.1 OBDII Bluetooth Interface Auto Car Diagnostic Scanner Module","description":"\u003ch1\u003eELM 327 V2.1 OBDII Bluetooth Interface Auto Car Diagnostic Scanner Module\u003c\/h1\u003e\n\u003cp\u003eThe ELM327 V2.1 is a compact Bluetooth OBDII interface module that connects to your car's OBDII port to read and clear diagnostic trouble codes from the ECU. It works with mobile apps on Android and iOS, making it ideal for DIY car enthusiasts, mechanics, and automotive hobbyists.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInterface: Bluetooth 2.0 (SPP)\u003c\/li\u003e\n\u003cli\u003eProtocol: OBDII (SAE J1850 PWM, J1850 VPW, ISO 9141-2, ISO 14230-4, ISO 15765-4 CAN)\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 12V DC (from vehicle OBDII port)\u003c\/li\u003e\n\u003cli\u003eCompliance: ELM327 V2.1 command set\u003c\/li\u003e\n\u003cli\u003eDimensions: Approximately 45mm x 25mm x 15mm\u003c\/li\u003e\n\u003cli\u003eConnector: OBDII 16-pin male\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cp\u003eArduino (via UART), ESP32, ESP8266, Raspberry Pi, STM32, and any platform with a Bluetooth serial interface. Also works with Android and iOS apps like Torque, Car Scanner, and OBD Auto Doctor.\u003c\/p\u003e\n\n\u003ch2\u003eWhat you can build with it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReal-time car dashboard displaying RPM, speed, coolant temperature, and fuel economy on a smartphone or LCD.\u003c\/li\u003e\n\u003cli\u003eAutomated fault code logger for fleet vehicles or personal car maintenance tracking.\u003c\/li\u003e\n\u003cli\u003eWireless OBDII data logger for performance tuning or fuel consumption analysis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery ELM327 module from Compoden comes with an AI build companion delivered via QR code, email, or WhatsApp — it helps you wire and program this part into a working project. With 10 years of experience supplying makers, schools, and engineering institutions across India, we ensure you get genuine parts and reliable support. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat cars are compatible with this ELM327 V2.1?\u003c\/summary\u003e\n\u003cp\u003eIt works with most petrol cars sold in India after 2005 that are OBDII compliant. Diesel cars may have limited support. Check your vehicle's OBDII port location before purchase.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat payment options are available for ELM327 V2.1?\u003c\/summary\u003e\n\u003cp\u003eWe accept UPI, all major credit\/debit cards, and Cash on Delivery (COD) across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I use this module with an Arduino?\u003c\/summary\u003e\n\u003cp\u003eConnect the module's TX, RX, VCC (5V), and GND pins to your Arduino. Use a voltage divider on the RX line if needed. Then upload an OBDII library sketch to communicate with the car's ECU.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the delivery time for this product?\u003c\/summary\u003e\n\u003cp\u003eWe ship ELM327 V2.1 across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Orders are dispatched within 24 hours and typically arrive in 3-7 business days.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003eBuy ELM327 V2.1 Online in India with COD and UPI available across India.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"ELM 327 V2.1 OBDII Bluetooth Interface Auto Car Diagnostic Scanner Module\",\n  \"description\": \"ELM327 V2.1 Bluetooth OBDII interface module for reading and clearing car ECU fault codes. 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