1. Introduction
This manual provides essential information for the safe and effective use of your XINQI Non-Contact Infrared Thermometer, Model YT-EWQ-04. This device is designed for measuring human body temperature by detecting infrared energy emitted from the forehead. It is intended for home use and professional medical settings.
2. Safety Information
- Do not immerse the thermometer in water or other liquids.
- Keep the device away from direct sunlight and high temperatures.
- Avoid dropping the thermometer or subjecting it to strong impacts.
- Do not attempt to disassemble or repair the device yourself. Contact qualified service personnel.
- Keep out of reach of children.
- Ensure the measurement probe is clean before each use.
3. Product Overview
The XINQI Non-Contact Infrared Thermometer provides quick and accurate temperature readings without physical contact. It features a clear LCD display and intuitive controls.

Image Description: A labeled diagram of the XINQI Non-Contact Infrared Thermometer. Key components indicated are the Infrared Detection Head, LCD Display, Up Button, Down Button, Setting Button, Measuring Switch, and Battery Cover.

Image Description: The back view of the XINQI thermometer, showing the model number YT-EWQ-04 and highlighting features such as 1-second testing, fever alarm, mercury-free design, and automatic switch-off.
Key Features:
- Non-contact measurement for hygiene.
- Fast 1-second temperature reading.
- High temperature alarm function.
- Large LCD display for easy reading.
- Memory function for previous readings.
- Automatic power-off to conserve battery.
4. Setup
Battery Installation:
The thermometer requires two AAA batteries (not included) for operation. Follow these steps to install them:
- Hold the unit firmly.
- Open the battery back cover by sliding it in the direction indicated.
- Insert two DC 3V (AAA) batteries, paying close attention to the positive (+) and negative (-) polarity indications inside the compartment.
- Close the battery back cover until it clicks securely into place.

Image Description: A four-panel image illustrating the battery installation process. Panel 1 shows holding the unit. Panel 2 shows opening the battery cover. Panel 3 shows inserting two AAA batteries with correct polarity. Panel 4 shows closing the battery cover.

Image Description: A close-up view of the thermometer's battery compartment with two AAA batteries inserted. Labels clearly indicate the positive (+) and negative (-) poles for correct battery placement.
5. Operating Instructions
Taking a Measurement:
- Ensure the thermometer is clean and dry.
- Point the infrared detection head towards the center of the forehead, approximately 1-5 cm away.
- Press the Measuring Switch (trigger button) once.
- The temperature reading will be displayed on the LCD screen within 1 second.
Understanding the Display:
The LCD display features a 3-color backlight system to indicate temperature ranges:
- Green Backlight: Indicates normal body temperature (typically 32°C ~ 37.3°C).
- Blue Backlight: Indicates low fever (typically 37.4°C ~ 38°C).
- Red Backlight: Indicates high fever (typically 38.1°C ~ 39.1°C or higher), suggesting medical attention may be required.

Image Description: Three images of the thermometer's LCD display, each showing a different backlight color (green, blue, red) corresponding to normal, low fever, and high fever temperature ranges, respectively. The temperature values and associated advice are also shown.
Mode Selection (Body/Surface Temperature):
The thermometer can measure both body temperature and surface temperature. Use the 'Set up' button to toggle between modes.

Image Description: A close-up of the thermometer's LCD display, clearly showing 'Surface temp' indicated at the top left, along with a temperature reading of 36.8°C and other icons.
6. Maintenance
Cleaning:
- Use a soft, dry cloth to clean the thermometer body.
- For the infrared lens, gently wipe with a cotton swab slightly moistened with alcohol. Do not use abrasive cleaners.
- Ensure the device is completely dry before storage or next use.
Storage:
- Store the thermometer in a cool, dry place, away from direct sunlight and extreme temperatures.
- If not in use for an extended period, remove the batteries to prevent leakage.
7. Troubleshooting
- No Power: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate Readings: Ensure the infrared lens is clean. Make sure the measurement distance is correct (1-5 cm). Avoid taking measurements immediately after entering a room with a significantly different temperature.
- Error Message on Display: Refer to the specific error code in the full manual (if available) or contact customer support. Common errors may relate to ambient temperature being outside operating range.
8. Specifications
| Specification | Detail |
|---|---|
| Brand | XINQI |
| Model Number | YT-EWQ-04 |
| Power Source | Battery Powered (2x AAA) |
| Item Weight | 150 g |
| Package Dimensions | 11 x 10 x 5 cm |
| Measurement Type | Non-Contact Infrared |
| Measurement Time | 1 Second |
9. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact your retailer. Keep your purchase receipt as proof of purchase.