1. Important Safety Information
Please read this manual carefully before using the Yuwell YT-2 Forehead Contactless Thermometer. Keep this manual for future reference.
- This device is intended for measuring human body temperature from the forehead.
- Do not use the thermometer for purposes other than its intended use.
- Keep the device away from direct sunlight, dust, extreme temperatures, and moisture.
- Do not drop or subject the thermometer to strong impacts.
- Consult a physician if you have concerns about your temperature readings.
- Keep out of reach of children.
2. Product Overview
The Yuwell YT-2 is a contactless forehead thermometer designed for quick and accurate temperature measurement. Its features include:
- One second quick measurement
- Illuminated screen with color guide for temperature indication
- Temperature alert with vibration and sound
- Memory retrieval for up to 60 readings
- Automatic shutdown after measurement to conserve battery life

Figure 1: The Yuwell YT-2 Forehead Contactless Thermometer. This image shows the white and grey thermometer with a digital display showing "36.8 °C" and battery indicator. The Yuwell logo is visible on the lower right side of the device.
3. Setup
3.1 Battery Installation
- Locate the battery compartment cover, usually on the handle or back of the device.
- Slide or open the cover according to the indicator.
- Insert two (2) AAA batteries, ensuring correct polarity (+ and -).
- Close the battery compartment cover securely.
3.2 Initial Power On
After installing batteries, press the power button (often integrated with the measurement button) to turn on the device. The display will show a self-test sequence before entering standby mode, ready for measurement.
4. Operating Instructions
4.1 Taking a Measurement
- Ensure the thermometer is in forehead measurement mode (if applicable, some models have object mode).
- Position the thermometer approximately 1-5 cm (0.4-2 inches) from the center of the forehead.
- Press the measurement button once.
- The measurement will be completed in one second, and the temperature will be displayed on the illuminated screen.
- The screen's color may change (e.g., green for normal, yellow/red for elevated) to provide a quick visual guide.
- If a high temperature is detected, the device may alert with vibration and sound.
4.2 Memory Function
The Yuwell YT-2 stores up to 60 previous temperature readings. To retrieve them:
- With the device powered on, press the memory button (often indicated by an 'M' or a book icon).
- Each subsequent press will cycle through the stored readings, from most recent to oldest.
4.3 Automatic Shutdown
To conserve battery life, the thermometer will automatically shut down after a period of inactivity following a measurement.
5. Maintenance and Care
5.1 Cleaning the Thermometer
To ensure accurate readings and hygiene, clean the thermometer regularly:
- Wipe the probe and body of the thermometer with a soft cloth dampened with alcohol (70% isopropyl) or a mild disinfectant.
- Do not immerse the thermometer in water or any other liquid.
- Allow the thermometer to air dry completely before storage or next use.
5.2 Storage
Store the thermometer in a cool, dry place, away from direct sunlight and extreme temperatures. Keep it in its original packaging or a protective case when not in use.
5.3 Battery Replacement
When the low battery indicator appears on the display, replace both AAA batteries as described in Section 3.1. Dispose of used batteries according to local regulations.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Device won't turn on | Dead or incorrectly installed batteries. | Replace batteries, ensuring correct polarity. |
| Inaccurate readings | Improper measurement distance; dirty sensor; environmental factors (e.g., drafts, direct sunlight). | Ensure correct distance (1-5 cm); clean the sensor; measure in a stable environment. Wait 15-30 minutes after entering a new environment before measuring. |
| "Lo" or "Hi" displayed | Temperature is outside the measurable range. | Ensure the thermometer is used within its specified operating temperature range. |
| Error message (e.g., "Err") | System malfunction or measurement error. | Turn off the device, wait a few seconds, and turn it back on. If the error persists, contact customer support. |
7. Specifications
| Feature | Detail |
|---|---|
| Model | YT-2 |
| Brand | Yuwell |
| Measurement Type | Forehead, Contactless |
| Power Source | Battery Powered (2 AAA batteries required) |
| Display Type | Digital, Illuminated |
| Memory Capacity | 60 reads |
| Special Features | Fast Reading System, Temperature Alert (vibration & sound), Color Guide |
| Package Dimensions | 17 x 6.4 x 5.4 cm |
| Item Weight | 75 g |
| Care Instructions | Wipe Clean |
| Age Range Description | Adult (suitable for all ages with proper use) |
8. Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or contact Yuwell customer service directly. Contact details can typically be found on the manufacturer's official website or on the product packaging.
You may also visit the Yuwell brand page on Amazon for more information.





