Categories: walnut

walnut WT202211 Wearable Smart Thermometer User Manual

User Manual

WT202211 Wearable Smart Thermometer

You are now an integral part of the Walnut family!
Our brand was established by parents with a variety of backgrounds in engineering, design, manufacturing, and tech. However, we all came together with the shared vision of easing the burden of parental anxiety. We’re committed to making life easier for the modem parents. Forget constant nvonitoring at the expense of your own inner calm. With Walnut thermometer, you can go about your day with the assurance that your child’s. health is taken care of.

What Comes in the Box

  1. Walnut Thermometer
    To start tracking your child’s temperature, simply position this discrete unit on their chest.
  2. Base Station
    The base station is a protective travel case to store your Walnut  thermometer and adhesive patches. To charge thethermometer, the thermometer will automatically charge whan it’s stored in the base station. (via the charging cabia in the package)
  3. Adhesive Patches (10 pieces included) To use the Walnut thermometer, place one adhesive patch on the back of the thennometer before positioning tt on your child’s  chest.
  4. User Manual
  5. —Type-C Charging Cable

Using the Walunt Thermomertre

Getting Started

step 1
Download the Walnut Cares App After downloading the Walnut Cares App, review our simple guide for applying and operating the Walnut thermometer. Through the app, you can create an account with an individual profile to track your child’s temperature data.step 2
Pair the thermometer with your phone Take out the thermometer from the base station. The indicator light, located on the penguin’s mouth, will flash momentarly to signify that the thermometer is activated.
To pair the thermometer, switch your phone’s Bluetooth® on and choose Walnut thermometer from the list of available devices if It doesn’t automatically connect.

step 3
Apply an adhesive patch to the thermometer Peel off the protective layer labeled 1″ before carefully signing the adhesive patch with the metal sensor on the back of the Walnut thermometer.

step 4
Position the thermometer on your child’s chest Peel off the protective back layer of the adhesive patch. Be careful to position the metal sensor in the middle of your child’s chest. Press ightly before checking that the Walnut thermometer is fixed securely.

step 5
Calibrate and begin monitoring
Equipped with automatic calibration function, please allow the temperature to be calibrated when the monitoring starts (calibration time: 3-5 minutes for 72°F normal room temperature. And takes 5-10 minutes Between 40°F-60°F). In the meantime, you can use the app to establisha temperature alert.
Now, simply begin monitoring your child’s temperature, stress-free. Keep in mind, the temperature alert will be set automatically based on your child’s age, as entered in the profile you created through the app. You can override this and set your desired temperature alert, described in detail in the chart on page 24-25.

End of Your Temperature Session

step 1 Remove the adhesive patch To remove the thermometer, first loosen the edges of the adhesive patch, then slowly raise it off the skin.
Next, simply remove the adhesive patch from the Walnut thermometer and dispose of it. If there’s any residue left on the skin, wash gently with soap and warm water.

step 2 Store the thermometer When not in use, keep the Walnut thermometer and extra adhesive patches in the base station. Please connect the charging cable to charge it again for better maintenance. Before the next use, thoroughly disinfect both sides of the Walnut thermometer using 70% isopropyl alcohol. Once dry, you can apply a new adhesive patch.

Cleaning and Care

The thermometer is mainly for home use, if used for multiple patients, please clean the device in between uses with the following steps:
step 1 Use an alcohol swab or cotton tissue moistened with alcohol (70% isopropyl) to clean the thermometer casing thoroughly. The wiping process preferably lasts 15 seconds.
step 2 Allow at least 5 minutes drying time before taking a temperature.
step 3 After cleaning, if the device is not visually clean when observed with magnification and adequate lighting, please repeat the clean steps above.

  1. The cleaning steps above have been validated according to the FDA Guidance, “Reprocessing Medical Devices in HealthCare Settings: Validation Methods and Labeling”.
  2. Ensure that no liquid enters the interior of the device. Never use abrasive cleaning agents, thinners, or benzene for cleaning, and never immerse the device in water or other cleaning liquids.

Indicator Light

When you remove the Walnut wearable smart thermometer device from the base station, the indicator light located in the Penguin’s mouth will flash blue. This lets you know that the thermometer is activated.
If the indicator light doesn’t turn after removing the thermometer from the base station, this signifies that the device is either out of battery. The light on the base will turn blue when charging, and turn white when fully charged.
You will also be notified by the app if the device runs out of battery while you’re using it.

Adhesive Patches

Low-sensitivity Silicone Adhesive Patches The silicone adhesive patches that come with your device are a proprietary Walnut thermometer accessory. The adhesive is medical grade, low-sensitivity, and free of color and odor. This makes them safe for use on children and sensitive skin.


  1. Do not leave the adhesive patch on longer than 24 hours. You may want to replace it sooner if any discomfort occurs.
  2. If skin rash or irritation occurs, carefully remove the thermometer and consult your doctor.
  3. Do not apply the adhesive skin to broken, irritated, or wounded skin.
  4. Do not apply lhe adhesive patch to skin with excess body hair, as removal is more Gory to be palnfid
  5. Store the adhesive Ina cod, dry place, away from direct sunlight.
  6. Only use the designated Walnut thermometer adhesive patches with the thermometer device.
  7. Do not apply the adhesive patches to babies who are premature or undersized, or who have a low birth weight.

The Walnut Cares App

The Walnut Cares app has complete compatbilty with all the latest Phone/Pad and Android models. For more information on compatibility, visit:

Recommended system specifications for Walnut Cares: SmartPhOnes
  • JOS 9.0or tater
  • Android 4.4 or later


Please note that the Walnut thermometer measures the chest temperature, and then calculates the body temperature through an algorithm.
Temperature fluctuates throughout the body, so the reference temperature depends on the area of measurement.
High Temperature Alert:
38°C 100.4°F
If not due to a fever, classified as hyperthermia. Symptoms include sweating more than usual and feeling overheated, thirsty, a little hungry, and generally uncomfortable. May be accompanied by chills if due to fever.
Calibration Time:
Walnut smart wearable thermometer is equipped with automatic calibration function, please allow the temperature to be calibrated when the monitoring starts (calibration time: 3-5 minutes for 72°F normal room temperature. And takes 5-10 minutes Between 40°F-60°F).
Low Temperature Alert:
35°C 95°F
Body temperature under 35°C (95 °F) is classified as hypothermia. Symptoms include forceful shivering, numbness and a blue/ grey tinge to the skin. May also experience increased heart rate.

Technical Specifications

Product name:Walnut Wearable Smart Thermometer
Duration of contintiunous battery use:about 5 days
Charging time:about 11 hours
Water resistance:IPX5
Operation,/Storange conditions Temperature:41°F-104°F
Humidity range:85%RH
Working voltage:3.6V
Battery capacity:25mAh
Standby power:0.005mA
Working power:0.17mA-0.3mA

Reference Temperature Guidelines

Due to the influence of room temperature, it need 5-10 minutes to calibration.
Keep in mind that the room temperature can affect your child’s temperature measurement, so try to avoid an overly hot or cold room when measuring.
Notice: When you use the Walnut Thermometer at a room temperature higher than 89.5°F, first cool down the Walnut Thermometer below 89.5°F, for an accurate reading purpose. Should you experience an unexpected dip in temperature or if the reading is surprisingly low, check to make sure that the sensor is attached properly and in full contact with the chest.

Normal94.5 – 98.4°F 34.7- 36.9°C94.5 – 99.1°F 34.7 – 37.3°C96.6 – 981°F 35.9 – 36.7°C
Moderate98.5 -100.2°F 37.0 – 37.9°C99.2 -100.2°F 37.4 – 37.9°C98.2 -1011°F 36.8 – 38.4°C

Through this simple color-coded system, Walnut thermometer instantly shows you if your child’s temperature is in the low, moderate, normal, or high range, according to their age.

Frequently Asked Questions

Q:Besides the middle chest, can I put Walnut Thermal in other body areas?

– A:No. If you put it onto other areas, it may affect the temperature reading accuracy.

Q:What’s the best way to take off the Walnut Thermal?

– A:As the video shows, please use your fingers to push down the baby’s skin, and then slowly take it off.

Q:What if there is some rash after I take off the Walnut Thermal?

– A:Every baby’s skin types are different. We used the best 3M adhesive options. If there is any rash, please use some cream or Vaseline to put on the skin.

Q:Is the temperature reading accurate?

– A:It’s accurate, the difference for the temperature is +/- 0.3 °F. It has been tested to the ASTM E1112-00 standard, which is required for all clinical digital thermometers. Please make sure 1: place the thermometer in the middle of the chest. 2: Don’t put it in an extreme environment.

Q:What is the maximum range of Bluetooth?

– A:It’s about 30 feet (10 meters) between the Walnut Thermal and the smartphone.

Q:How can I tell if the thermometer has a battery?

– A:One way you can tell is by the penguin’s mouth. If there is no red light blink when you take it out of the base station, it has no battery. Secondly, the app will remind you of the insufficient charge.

Q:How long should I use adhesive on my baby?

– A:We recommend you change the adhesive every 12 hours, no longer than 24 hours. Please make sure the baby’s skin is ok after use.

Q:Can adults use Walnut Thermal?

– A:We recommend not to because an adult’s temperature measurement algorithm standard is different compare to a kid’s.

Q:Can I use multiple phones to monitor the same thermometer?

– A:No. You only can connect one phone with one Walnut Thermal.

Q:Can I close the app/run it in the background?

– A:Yes you can. You still can send messages or taking a phone call.

Q: Do I have to re-pair the device to my smartphone every fever occasion, or it connects automatically after the initial pairing?

– A:After the first time pair with your phone, you don’t need to pair again next time. If you want to pair with a different phone, you have to disconnect the original paired phone, and then connect with the new phone.

Q:How will my information and my child’s information be stored?

– Alt will be secured inside your app locally. We don’t restore any information online for your private purpose.

Q:Which phones/tablets does Walnut Thermal work with?

– A:The Walnut Thermal app supports the IOS Apple store and Android. It supports smartphones and tablets.

Q:ls the Walnut Thermal waterproof?

– A:Please note that the thermometer is made of relatively precise components, and as your mobile phone, it is not suitable to be used and stored in excessive humidity, nor extreme high/low-temperature environments.

Q:What if a child accidentally puts Walnut Thermal in his mouth?

– A:Walnut Thermal is made of Food-grade liquid silicone. However, please do NOT swallow, if you put it in your mouth, take it out as soon as possible.


ProblemTroubleshooting Hints
Put the thermometer into the base station to charge, but the charging indicator light is not on.Lightly touch the thermometer with your finger and try to adjust its
position. Blue light when charging and a white light when fully charged.
The APP cannot properly link to the thermometer.The battery is low or exhausted, please put the thermometer back in the base station to charge and try to connect again after it is fully charged.
(Scan the second OR code on page 20 of the instructions to see the detailed connection steps.)
The APP cannot automatically connect to the thermometer.Make sure the thermometer and phone are within 10 meters of each other and in the same room. Click the directory at the upper left corner of the APP interface, select “Device”, and click the “+” button at the upper right corner to automatically match the thermometer link.
Temperature reading was lower/higher than expected.Be careful to position the metal sensor in the middle of your child’s chest. Press lightly before checking that the Walnut thermometer is fixed securely.
*Please refer to pages 28-29 of the manual, and set the temperature alarm according to the child’s age.
Temperature reading is much lower than the actual.The thermometer is equipped with automatic calibration function, please allow the temperature to be calibrated when the monitoring starts (calibration time: 3-5 minutes for 72 °F normal room temperature. And takes 5-10 minutes Between 40 °F-60°F). Please be patient, it is being automatically calibrated.
Other problems .Please contact customer services.

Important Notes
Intended Use and Precautions

  1. Walnut Wearable Smart Thermometer aluelooth? connection reaches a communication range of about30feet. This may be affected by obstacles such as woes, people, or large metal objects, in addition to electromagnetic waves.
  2. Yes phone battery will be depleted faster with the consistent use of Eluetoothe commisication. Make sure to charge your battery as needed to keep it from dying during monitoring.
  3. While monitoring, you are free to use any other appications on your phone. However, be careful not to close the Walnut thermometer app or you will lose your currant temperature monitoring period.
  4. To receive temperature notifications, navigate to your phones settings to enable push notifications from the Walnut thermometer app. Addle:malty, make sure that your phone isnot set to either mute or “do not disturb”.
  5. Monitor your child regularly for any indication of illness.

Intended Use and Precautions
Intended Use
Walnut thermometer Is a reusable. non-invasive electronic device to be used at home. It’sdesigned for continuous body temperature monitoring of children ages 0-6 years in non-emergency medical situations.
Do not make any modifications to this electronic device.
Oo not apply bending Of twisting pressure to the Walnut thermometer device. Walnut Wearable Smart Thermometer
Note that there are many indications and symptoms of illness in addition to irregular temperature. Its important to regularly monitor your child for any sign they may need medical care.
Done( use the Walnut thermometer device on broken a Irritated skin and make sure it maintainscontinuous contact with the skin. Note that the thermometer is not a sterile device and must be appropriately Peened between uses.
You are recommended to consult with a medical professional in the following cases:

  • Your child’s temperature is elevated above the normal range for a continuous period.
  • You notice any of the following symptoms, reganfess of whether your child’s temperattsre Is within the normal range: &kooky breathing, painful urination, unexplained drowsiness, seizure, stiff neck, disinterest in eating, prolonged vomiting.

Only use the provided proprietary accessories with the Walnut thermometer device. Otherwise, you risk inaccurate temperature readings, or damaging the skin or the device.
The accuracy of the temperature readings may be compromised by positioning the device improperly on the body, extreme room temperatures, certain skin conditions and the use of unauthorized accessories.
Do not use the Walnut thermometer device outdoors.
Apply the thermometer oriy to the middle of the chest. Incomplete contact with the skin may result In inaeCurate temperature measurements.
Do not immerse the Walnut thermometer device in water or any other liquid. Remove the thermometer before bathing.
Do not use the Walnut thermometer in conjunction with an MRI or CT device. If skin rash or krItation occurs, carefully remove the device and consult with a medical professional.
Do not allow the device in the mouths of children or pets.
Ensure the device is set up and operated with adult supervision. Contact customer support should you have any problems arise.
Keep away from children and pets when stored.
Ensure your phone Is not set to silent or “do not disturb” during use so you can hear a fever alert should one arise.

Certification & Disclaimer

For Private Households Information on Disposal for Users of Waste Electrical and Electronic Equipment (WEEE).
Disposal of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the environment, which could otherwise arise from inappropriate waste handling. Please contact your local authority for further details of your nearest designated collection point. Penalties may be applicable for incorrect disposal of this waste, in accordance with your national legislation.
Technical Specification
Compatible with the latest ‘Phone and a variety of Android phones.
Satisfaction Guarantee and Limited Warranty
30-Day Guarantee We will give you a full refund if you are not satisfied with the product.
Free Support Ask us anything anytime, we will get back toyou ASAP at

One-Year Warranty We offer almited warranty that commences from the date of purchase of the product.
FCC Caution:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device. pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates. uses and can radiate radio frequency energy and. if not installed and used in accordance with the instructions. may cause harmful interference to radio communications. However. there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception.
– 9: 81 7 6 65 4 83 4 24 0 64365/ 8 16 8-Et 481..
•0 4628 )27638 6(8 48 418′ 8169′. 17- 4302′ El I 2218 114938 4862418414694E6/8 648 18 ‘ /22 4EIVIS< 6- al 47’ H’$
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced rachoff V technician for help.
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Documents / Resources

walnut WT202211 Wearable Smart Thermometer [pdf] User Manual
WT202211, 2A9BOWT202211, WT202211 Wearable Smart Thermometer, Wearable Smart Thermometer, Smart Thermometer, Thermometer

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