1. บทนำ
The KEVWR Mini ELM327 OBDII Car Auto Diagnostic Scanner is a compact tool designed to assist in diagnosing vehicle issues by connecting to your car's On-Board Diagnostics II (OBDII) port. This device allows you to read and clear diagnostic trouble codes (DTCs), monitor real-time vehicle data, and perform various diagnostic tests using compatible Android and Windows devices.
หมายเหตุสำคัญ: This device is compatible with OBD2 gasoline cars and EOBD cars. It is not compatible with iOS devices, Diesel, New Energy (including Hybrid & Electric), or Modified Vehicles. Your vehicle must have a 16-pin DLC (Data Link Connector) under the dash and the Vehicle Emission Control Information Label must state that the vehicle is OBD II compliant.
2. เนื้อหาบรรจุภัณฑ์
- 1x KEVWR Mini ELM327 Unit (Bluetooth version)
- 1x CD Drive (containing software and instructions)
3. การตั้งค่า
Follow these steps to set up and connect your KEVWR Mini ELM327 scanner:
- ติดตั้งซอฟต์แวร์: Insert the provided CD drive into a computer. For Windows PC, it is recommended to use the installation software in the "ScanMaster-ELE v2.1" folder under the OBDII On Window PC software directory. For Android, various apps are available; the CD contains options, including "Bluetooth for Android (Enhanced Version)" which is noted for stability. Some apps may require a purchase.
- เสียบอุปกรณ์: Locate your vehicle's OBD2 port, typically found under the dashboard on the driver's side. Plug the KEVWR Mini ELM327 unit firmly into the port.
- สตาร์ทรถ: Turn the vehicle's ignition to the "ON" position or start the engine.
- เปิดใช้งานบลูทูธ: On your Android phone or tablet, enable Bluetooth.
- จับคู่กับอุปกรณ์: ค้นหา available Bluetooth devices and select "OBDII" to pair.
- เปิดใช้งานแอปพลิเคชัน: Open the downloaded diagnostic application on your device. Follow the app's instructions for simple settings and wait for a successful connection to your car's ECU.

Text Description for Figure 1: An image showing the compact blue KEVWR Mini ELM327 OBDII scanner plugged into the OBD2 port located under the dashboard of a car. The device is small and protrudes minimally, indicating easy installation without tools.
4. คู่มือการใช้งาน
Once connected, the diagnostic application provides access to various vehicle functions:
4.1 การอ่านและการล้างรหัสข้อผิดพลาดในการวินิจฉัย (DTCs)
The scanner allows you to read current, pending, and permanent DTCs stored in your vehicle's ECU. After identifying and addressing the underlying issue, you can use the app to erase these codes and turn off the "Check Engine Light" (CEL).

Text Description for Figure 2: An image of a smartphone displaying a dashboard-like interface with real-time vehicle data. Metrics such as fuel consumption, current speed, accumulated mileage, average speed, and fuel quality are visible, indicating the device's ability to provide comprehensive vehicle information.
4.2 การตรวจสอบข้อมูลแบบเรียลไทม์
Access live sensor data from your vehicle, which can include:
- รอบเครื่องยนต์
- ความเร็วของรถ
- อุณหภูมิน้ำหล่อเย็น
- อุณหภูมิน้ำมันเครื่อง
- CVT (Continuously Variable Transmission) Temperature
- สถานะระบบเชื้อเพลิง
- ระดับน้ำมันเชื้อเพลิง
- ปริมาณแบตเตอรี่tage
- Oxygen Sensor Readings
- แรงดันในท่อร่วมไอดี
- ตำแหน่งคันเร่ง
- And more, depending on the vehicle and app.

Text Description for Figure 3: An image of a smartphone displaying a sophisticated vehicle monitoring interface. It shows gauges for engine RPM, speed, coolant temperature, and other data points, offering a comprehensive overview of the car's performance and status.
4.3 Emission Tests
The scanner supports various emission-related tests to help ensure your vehicle is compliant:
- แบบทดสอบความพร้อม I/M: Checks if the various emission-related systems are functioning correctly and have completed their diagnostic cycles.
- การทดสอบเซ็นเซอร์ O2: Monitors the oxygen sensors to ensure they are operating within specified parameters.
- การทดสอบระบบ EVAP: Checks the Evaporative Emission Control System for leaks or malfunctions.

Text Description for Figure 4: เกิดการระเบิดขึ้น view diagram of a car's chassis and engine, with four numbered points indicating different diagnostic functions: 1. Full Vehicle Inspection, 2. Fault Analysis, 3. Fault Code Detection, and 4. View Multiple Data Streams. This visual emphasizes the comprehensive diagnostic capabilities.
5 การแก้ไขปัญหา
- อุปกรณ์ไม่ได้เชื่อมต่อ:
- ตรวจสอบให้แน่ใจว่าได้เสียบอุปกรณ์เข้ากับพอร์ต OBD2 อย่างแน่นหนาแล้ว
- ตรวจสอบว่าสวิตช์กุญแจรถเปิดอยู่ หรือเครื่องยนต์กำลังทำงานอยู่
- Check that Bluetooth is enabled on your Android/Windows device and that "OBDII" is paired.
- Try restarting the diagnostic application or your phone/tablet.
- ปัญหาการทำงานของแอป:
- Some apps may require specific settings or permissions. Refer to the app's user guide.
- If using a free app, consider trying another compatible app from the provided CD or app store, as some may offer better stability or features.
- Incorrect Readings or No Data:
- Ensure your vehicle is OBD II compliant (16-pin DLC, emission label).
- Confirm the app is correctly configured for your vehicle's make/model if it offers such options.
6. ข้อมูลจำเพาะ
| ยี่ห้อ | KEVWR |
| หมายเลขรุ่น | KEVWRAI |
| การเชื่อมต่อ | บลูทูธ |
| อุปกรณ์ที่รองรับ | แอนดรอยด์, วินโดวส์ |
| Unsupported Devices | iOS, Diesel, New Energy (Hybrid & Electric), Modified Vehicles |
| ความเข้ากันได้ของยานพาหนะ | OBD2 gasoline cars, EOBD cars (with 16-pin DLC and OBD II compliant label) |
| น้ำหนักสินค้า | 1.13 ออนซ์ |
| ขนาดแพ็คเกจ | 5.94 x 4.21 x 1.18 นิ้ว |
7. การสนับสนุนและการรับประกัน
For any questions or assistance, please feel free to contact KEVWR customer service. We aim to reply within 24 hours.
This product is a useful gadget for car owners and makes a good gift. We are committed to providing excellent after-sales service.
8. สินค้าหมดview

Text Description for Figure 5: An image of the KEVWR Mini ELM327 OBDII Car Auto Diagnostic Scanner. It is a small, rectangular blue device with a transparent casing, showing internal circuitry. The label clearly states "ELM 327 MINI Interface Supports all OBDII protocols."

Text Description for Figure 6: An image illustrating the dimensions of the KEVWR Mini ELM327 OBDII scanner. The device measures approximately 3cm (1.18in) in height and 4.5cm (1.77in) in length, with a width of 2.4cm (0.94in), emphasizing its mini size.

Text Description for Figure 7: An image detailing the product characteristics of the KEVWR Mini ELM327 OBDII scanner. It emphasizes comprehensive vehicle health inspection and professional fault detection, with icons for driving fuel consumption analysis, intelligent frequency conversion, vehicle condition monitoring, and adverse trend prediction.
9. วิดีโอผลิตภัณฑ์อย่างเป็นทางการ
Text Description for Video 1: This video, titled "Wireless OBD2 Scanner Bluetooth" by seller UMEIJA, demonstrates the KEVWR Mini ELM327 OBDII scanner. It shows the device being plugged into a car's OBD2 port, followed by a smartphone screen displaying the diagnostic app interface. The app shows various vehicle parameters and diagnostic functions, illustrating the ease of use and real-time monitoring capabilities.