ELM 327 V2.1 OBDII Bluetooth Interface Auto Car Diagnostic Scanner Module
ELM 327 V2.1 OBDII Bluetooth Interface Auto Car Diagnostic Scanner Module
The 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.
Specifications
- Interface: Bluetooth 2.0 (SPP)
- Protocol: OBDII (SAE J1850 PWM, J1850 VPW, ISO 9141-2, ISO 14230-4, ISO 15765-4 CAN)
- Operating voltage: 12V DC (from vehicle OBDII port)
- Compliance: ELM327 V2.1 command set
- Dimensions: Approximately 45mm x 25mm x 15mm
- Connector: OBDII 16-pin male
Compatible with
Arduino (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.
What you can build with it
- Real-time car dashboard displaying RPM, speed, coolant temperature, and fuel economy on a smartphone or LCD.
- Automated fault code logger for fleet vehicles or personal car maintenance tracking.
- Wireless OBDII data logger for performance tuning or fuel consumption analysis.
Built and Backed by Compoden
Every 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.
What cars are compatible with this ELM327 V2.1?
It 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.
What payment options are available for ELM327 V2.1?
We accept UPI, all major credit/debit cards, and Cash on Delivery (COD) across India.
How do I use this module with an Arduino?
Connect 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.
What is the delivery time for this product?
We 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.
Buy ELM327 V2.1 Online in India with COD and UPI available across India.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items