Product Overview: Upgrade your car maintenance with this Mini ELM327 V2.1 Bluetooth 5.1 OBD2 Scanner. Featuring the latest dual-mode Bluetooth 5.1 technology, it offers stable wireless connectivity for both iOS and Android devices. This compact diagnostic tool allows you to read and clear engine fault codes and monitor real-time vehicle data directly from your smartphone. Key Features: Universal Compatibility: Works with most 12V gasoline/petrol OBD2 compliant vehicles (US protocols from 1996, EU from 2001). Dual-Mode Bluetooth 5.1: High-speed connection supporting iOS and Android systems. Check Engine Light: Read diagnostic trouble codes (DTCs), display their meaning, and turn off the MIL ("Check Engine" Light). Real-Time Sensor Data: Monitor Engine RPM, Coolant Temperature, Speed, Fuel Trim, Intake Manifold Pressure, Timing Advance, Air Flow Rate, Throttle Position, and more. Important Compatibility Notes: Vehicle Limitations: Supports 12V Petrol cars only. Does NOT support Diesel cars, Heavy Trucks, Hybrids, or Electric Vehicles. Hardware Version: V2.1 Firmware (Single PCB). Please ensure your vehicle protocol is supported by V2.1. App Compatibility: This device works with popular third-party diagnostic apps available on the Google Play Store and Apple App Store (e.g., Torque, Car Scanner, OBD Fusion). Note: Apps may require a separate purchase/download. Connection Guide: For Android: Pair via phone Bluetooth settings (PIN is usually 1234 or 0000). For iOS (iPhone/iPad): Important: Do not pair in your phone's main system Bluetooth settings. Open your chosen OBD2 App, go to the App's Connection Settings, select "Bluetooth LE (4.0+)", and connect directly within the app. Package Includes: 1 x ELM327 Mini V2.1 Bluetooth 5.1 OBD2 Interface