yuwell YT-1 Duo Sensor Infrared Thermometer User Manual (2025)

Device use an applicant scope

• This device is used to measure the body temperature by passively sensing infrared heat radiation collected from the human body's forehead, which can be used for families and medical departments to measure the body temperature.
• Intended use and application scope: This device is used to measure the forehead temperature of the human body, which is applicable to infants, children, and adults.
• Contraindication: None.

Device structure and composition

• Device main structure and composition The thermometer consists of a housing, a sensor, a display, and a circuit board.
• LCD area
• Appendix： Instructions, Quick Operation Guide, 2 Section 7 Alkaline Batteries.

The symbols related to safety requirements in this device and their meanings:

Symbols	Implication
	Type BF application part
	Caution! Consult instruction of the product
	Paper recycling
	This side up
	Fragile
	Non-rainproof
	Not to be disposed of as ordinary waste
	Electronic information product pollution control mark environmental protection use period is 10 years. Consumables are not included

Matters need attention

1. The measurement result is only for reference, which is not a substitute for a physician's diagnosis. It s very dangerous to self-judge and treats only based on the measurement result. Please follow the doctor's instructions.
2. Please put the battery out of the reach of children, otherwise, it is dangerous.
3. When the product is not used for a long time (more than 3 months), remove the battery from the device to prevent battery leakage.
4. It is forbidden to immerse the infrared thermometer n any liquid, and It is forbidden to use it for a long time under too high or low-temperature conditions. No collisions drop and mix with sharp objects.
5. Do not put the battery close to the fire or into the fire to avoid the battery explosion. Do not use the battery when it leaks or molds; when discarding batteries or this product, it should be following local regulations to avoid contamination.
6. This product contains sensitive electronic components, should avoid strong electromagnetic interference.
7. Please read this instruction carefully before use to confirm that the battery is installed.
8. Do not disassemble, repair or remold this device, which may lead to measurement error or machine malfunction.
9. This product is not waterproof and should be used carefully to prevent liquid from entering the product. When the product gets wet due to contact with steam, use it after it becomes dry or gently wipe it with a soft dry cloth or cotton ball, otherwise, it will cause measurement errors.
10. If there is a temperature difference compared the environment of the device storage with that of the measuring environment, place the device in the measuring environment for more than 30 minutes, otherwise, there may be an error for the measurement result.
11. When the lens of the sensor becomes dirty, please wipe it gently with a soft dry cloth or cotton swab. Do not wipe it with other material, otherwise, it may cause lens surface of senor abrasion or machine malfunction.
12. Do not try to measure when the device is wet, which may cause measurement results inaccurate.
13. Before measurement, please make sure that there are no sweat, cosmetics, or oil stains on the forehead of the subject.
14. Before measuring, please make sure that the subject does not take a bath, exercise, or have a meal within 30 minutes, and the body is measured at a steady state.
15. Before use, please keep the sensor and cavities clean.
16. During measurement, do not let the subject directly face the air outlet of the sun, air conditioner, or heater, which will change the temperature of the forehead. Please conduct measurement in a stable environment as far as possible.
17. Under the condition which meets the requirement of storage, the usage period of the device is 5 years(fragile and consumable parts are not included).

Installation and usage

• Installing the battery The device is supplied with 2 Section 7 alkaline batteries. Push the battery cover downward and load the battery into the battery compartment. At this time, the device will start self-inspection. Pay attention to the positive and negative poles instruction in the battery compartment and cover the battery cover. Refer to the picture at right:
• Setting measure unit In the shutdown state, long-press the starting measuring button “ ”for 10 seconds to enter the temperature unit conversion state, and then short press the starting measuring button“ ” to select “ ”and“ ”temperature unit.●Measure temperature of human body 1. Point the infrared thermometer probe at the center of the eyebrow, within 0-5cm of the forehead (do not touch the forehead directly).2. Press the Start measuring button “ ”. After about 1 second, the infrared thermometer will have vibration and sound prompts to display the measurement results.Notes: ①When the measurement distance is more than about 5 cm, the word "0-5" will be displayed on the screen, please close to the subject, as the picture shows at right;

• Sound on/offsettingWhen the prompt on/off button slides to " ", the sound is off;When the prompt on/off button slides to " ", the sound is on.
• Power off① Long press Starting measurement button" " for 3~5 seconds to turn off the device;②In the absence of any operation, the device will automatically shut down after about 30 seconds.

Product maintenance and upkeep method

As the product is a reusable device, please pay attention to cleaning and disinfection after use. If the product is dirty, please keep the sensor and probe cavity clean, otherwise, the measurement accuracy will be affected.How to clean sensor and probe cavity: gently wipe the inner cavity or sensor mirror with a clean soft cloth orcottonswab.Disinfection of the product and its head: Gently wipe the surface of the product and the head used for measurement with a cotton swab dipped in a little medical alcohol (70%), it can be used until the alcohol has completely evaporated.

• Precaution for storageThis product should be stored in a dust-free, dry place, please avoid direct sunlight; do not store in places with high temperature, humidity, dust, and corrosive gas.This product is a high-precision device, please do not drop the device! Avoid drastic collisions and jolts and other adverse possibilities for transport.If the probe or the product itself has been damaged, do not continue to use it. Please do not use this product for any purposes other than its intended use. When it is used for children, please observe the general safety precautions.

Common failures and troubleshooting methods

Phenomenon of breakdown	Possible cause	Troubleshooting methods
The screen display" "	The measurement temperature is lower than 32℃, which is beyond the measurement range	Please re-measure following the product instruction
The screen display" "	The measurement temperature is higher than 43℃, which is beyond the measurement range	Pleasere-measure following the product instruction
The screen display" "	The environment temperature is too high or too low	Please measure under the 16℃~35℃ environment temperature
The screen display" "	The power of cells is a shortage	Change the cell
No display or abnormal display	The positive and negative poles of the cell are reversed or the device is abnormal	Re-install the cell, or contact the dealer

Measurement and transport storage environment

• measurement environment: Environment temperature: 16℃～35℃ Relative humidity: ≤85%(RH) Atmospheric pressure: 70kPa～106kPa
• Transportation and storage environment: Environment temperature: -20℃～+55℃ Relative humidity: ≤85%(RH) Atmospheric pressure: 70kPa～106kPa

Product technical parameters

• Power source: DC 3V( 2 Section 7 alkaline batteries)
• Measurement range: 32.0℃ ～43.0℃
• Display resolution: 0.1℃
• Measurement accuracy: ±0.2℃ in the range of 35.0℃～42.0℃ ±0.3℃in the range of 32.0℃～34.9℃ and 42.1℃～ 43.0℃
• Electric shock protection: the device is supplied by internal power
• Applied part: BF Type
• Running mode: continuous running
• Temperature units: ℃/℉
• Degrees of protection against ingress liquid: IP20 (solid foreign matter whose diameter are greater than or equal to 12.5mm can be prevented from entering, no protection against ingress liquid )
• Safety classification: the device that cannot be used in the presence of flammable anesthetic gases mixed with air or oxygen or nitrous oxide
• Product size: 149×38×42(mm)
• Product weight: about 68g (not including cell)

Warranty card

Warranty cardProduct name: Infrared thermometerModel: YT-1

The Use of Electromagnetic Environment Guidance

This product complies with the Electromagnetic Compatibility (EMC) standard for the safe operation of electrical equipment for medical use and YY0505-2012.The standard of YY0505-2012 (item 6.8.2.201) stipulates that users should be provided with detailed information related to the EMC environment for the safe operation of equipment. And the following is the description of technical instructions related to EMC. (For details, please refer to YY0505-2012.)The Electromagnetic Compatibility (EMC) standard represented by YY0505 set a criterion for the safe operation of electrical equipment for medical use. The standard stipulates that the interference of the noise generated by the equipment to other devices should be controlled within a certain range, so is the electromagnetic wave dry disturbance emitted by other devices (mobile phones, etc.).

1. Definition of EMC (electromagnetic compatibility) EMC refers to the ability to satisfy the following two requirements.●No unallowable electromagnetic interference noise will be emitted to other nearby electronic devices. (Radiation)●The device can work normally in an electromagnetic environment with the noise and other interference from other electronic devices. (Noise immunity)2. Technical specification on EMC (electromagnetic compatibility) Electrical equipment for medical use requires specific instructions for EMC and should be operated inaccordance with the following EMC information .● This device requires special instructions on electromagnetic compatibility (EMC). Please use the device in accordance with the EMC information described in this manual.● Portable and wireless radio frequency (RF) communication devices may affect the device.●When using this device, do not place it adjacent to or stack it with other devices.

Guidelines and Manufacturer's Declaration- Electromagnetic Immunity
The product should only be operated in the electromagnetic environment specified below.Purchasers and users should ensure that the product is operated in the specified electromagnetic environment.
Immunity test	YY0505Test level	Comp- license level	Electromagnetic environment
Conduct-tion RF GB/T 17626.6Radiation n RF GB/T 17626.3	3 Vrms150 kHz～80MHz 3 V/m80 MHz～2.5GHz	NA3 V/m	The portable and mobile RF communication devices should not be used within the recommended spacing distance calculated by the equation corresponding to the transmitter frequency, which is applicable for all parts of the product.The recommended spacing distance is not applicable.d=1.280 MHz ~ 800 MHz d=2.3800 MHz ~ 2.5 GHzIn which, P is Transmitter manufacturer specified by the transmitter manufacturer， which is expressed in Watt(W), and, d is recommended spacing distance, with its unit being meter(m). The electric field strength of a fixed RF transmitter is determined by a site survey of the electromagnetic field a) and should be lower than the compliance level in each frequency range. Interference may be triggered near equipment marked with thefollowing symbols.
Note 1: When the frequency ranges from 80 MHz to 800, the separation distance for the higher frequency should be applied.Note 2: These guidelines are not applicable to all circumstances for the propagation of electromagnetic waves can also be affected by the absorption and reflection of buildings, objects, and human bodies.a) The electric field strengths produced by stationary transmitters from the base stations of wireless (mobile/wireless) telephones and land mobile radio, amateur radios, AM/FM broadcasts, and television stations cannot be theoretically estimated correctly.

Registrant / Production Enterprise / After-sales Service Unit:Jiangsu Yuyue Medical Equipment Co., Ltd.Address / Production Address: Yunyang Industrial Park(South of Zhenxin Road), Danyang City, Jiangsu ProvinceTel: 0511-86900833Zipcode: 212300Revision date: April, 2019420X160mm：128g

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