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Defines the intended purpose and user group for the thermometer, specifying age ranges and exceptions.
Specifies conditions or situations where the device should not be used.
Provides crucial safety alerts and precautions for device operation and handling.
Guides on how to correctly insert batteries into the device compartment.
Provides step-by-step instructions for performing a temperature measurement.
Instructs on the proper method for cleaning the device's sensor and probe area.
Troubleshooting steps for when the screen displays 'Lo'.
Troubleshooting steps for when the screen displays 'Hi'.
Troubleshooting steps for when the screen displays 'Eri'.
Troubleshooting steps for when the screen displays '[]'.
Troubleshooting steps for when the device shows no display or abnormal behavior.
States the acceptable margin of error for temperature readings.
Details the device's protection against electrical shock.
Lists reasons for which warranty service will not be provided.
Defines the intended purpose and user group for the thermometer, specifying age ranges and exceptions.
Specifies conditions or situations where the device should not be used.
Provides crucial safety alerts and precautions for device operation and handling.
Guides on how to correctly insert batteries into the device compartment.
Provides step-by-step instructions for performing a temperature measurement.
Instructs on the proper method for cleaning the device's sensor and probe area.
Troubleshooting steps for when the screen displays 'Lo'.
Troubleshooting steps for when the screen displays 'Hi'.
Troubleshooting steps for when the screen displays 'Eri'.
Troubleshooting steps for when the screen displays '[]'.
Troubleshooting steps for when the device shows no display or abnormal behavior.
States the acceptable margin of error for temperature readings.
Details the device's protection against electrical shock.
Lists reasons for which warranty service will not be provided.
The Yuwell YT-1 Infrared Thermometer is a device designed for measuring human body temperature from the forehead. It is intended for use on individuals of all ages, excluding pre-term babies or very small (small for gestational age) babies. The device is composed of a housing, a sensor, a display, and a circuit board.
The primary function of the Yuwell YT-1 is to provide a non-contact measurement of forehead temperature. To operate, the infrared thermometer probe should be pointed at the center of the eyebrow, within 0-5 cm of the forehead. Pressing the "Start measuring" button initiates the measurement. After approximately 1 second, the device will vibrate and emit sound prompts to display the measurement results on the LCD screen.
The device incorporates several features to guide the user and indicate measurement status. If the measurement distance exceeds 5 cm, the display will show "0-5" to prompt the user to move closer to the subject. When the distance is less than 5 cm, the device automatically measures, vibrates, and emits a "di" sound before displaying the result. For temperatures of 37.6 °C (99.7 °F) or higher, the device will emit a quick, continuous three-time "di-di-di" alarm sound. This alarm also activates if the measured result falls outside the device's measurement range of 32 °C to 43 °C (89.6 °F to 109.4 °F), indicating a need to verify the measurement method and external environment.
The thermometer offers a temperature unit conversion state, allowing users to switch between Celsius (°C) and Fahrenheit (°F). This is accessed by long-pressing the "Start measuring" button for 10 seconds in the shutdown state, then short-pressing to select the desired unit, and finally long-pressing again to confirm.
The device also includes a sound on/off setting, controlled by a prompt on/off button. Sliding this button to one position turns the sound off, while sliding it to the other position turns the sound on. For power management, the device can be manually turned off by long-pressing the "Start measuring" button for 3-5 seconds. If left idle, it will automatically shut down after about 30 seconds to conserve battery.
The Yuwell YT-1 is designed for ease of use, but certain precautions are necessary to ensure accurate results and safe operation. Users should ensure that there is no sweat, cosmetics, or oil stains on the subject's forehead before measurement. It is also recommended that the subject avoids bathing, exercising, or eating within 30 minutes prior to measurement, and that the body is in a steady state. Measurements should be conducted in a stable environment, avoiding direct exposure to air outlets from the sun, air conditioners, or heaters, as these can affect forehead temperature.
The device is not intended for use when wet, as this can lead to inaccurate results. If the product becomes wet from steam, it should be allowed to dry or gently wiped with a soft dry cloth or cotton ball before use to prevent measurement errors. For self-measurement, it is recommended to measure close to the forehead.
The measurement result provided by the thermometer is for reference only and should not be used as a substitute for a physician's diagnosis. Users are advised to follow a doctor's instructions and not self-judge or treat based solely on the measurement result.
Proper maintenance of the Yuwell YT-1 is crucial for its longevity and accurate performance. As a reusable device, it requires cleaning and disinfection after each use. Keeping the sensor and probe cavity clean is particularly important, as dirt can affect measurement accuracy. The inner cavity or sensor mirror should be gently wiped with a clean, soft cloth or cotton swab. It is important not to use other materials for wiping, as this could cause abrasion to the sensor lens surface or lead to machine malfunction.
For disinfection, the surface of the product and the head used for measurement should be gently wiped with a cotton swab dipped in a small amount of 70% medical alcohol. The device can be used again once the alcohol has completely evaporated.
Battery management is also a key aspect of maintenance. The device is powered by 2 AAA alkaline batteries. When the battery symbol appears on the display, the batteries should be replaced. To do this, slide open the battery cover, remove the old batteries, and insert new ones, ensuring correct alignment of the positive and negative poles as indicated inside the battery compartment. If the product will not be used for an extended period (more than 3 months), the batteries should be removed to prevent leakage and potential damage to the thermometer. Empty batteries should be disposed of at appropriate collection sites in accordance with national or local regulations, as the product contains batteries and recyclable electronic waste.
The device should be stored in a dust-free, dry place, away from direct sunlight, high temperature, humidity, dust, and corrosive gas. Being a high-precision device, it should not be dropped, and drastic collisions, jolts, or other adverse conditions during transport should be avoided. If the probe or the product itself is damaged, it should not be used further. The device should only be used for its intended purpose. When used for children, general safety precautions should be observed. It is suggested to calibrate the monitor at least once a year, in accordance with local laws and regulations.
General| Type | Infrared Thermometer |
|---|---|
| Accuracy | ±0.2°C (±0.4°F) |
| Display | LCD |
| Display Resolution | 0.1°C (0.1°F) |
| Power Source | 2 x AAA batteries |
| Response Time | < 1 second |
| Storage Conditions | -20°C - 55°C (-4°F - 131°F), Humidity ≤ 85% |
| Measurement Range | 32.0°C - 42.9°C (89.6°F - 109.2°F) |
| Measurement Distance | 3-5 cm |
| Auto Shut-off | Yes, after 30 seconds |
| Operating Conditions | 10°C to 40°C (50°F to 104°F), ≤85% RH |
