Smart Armpit Thermometer

Please read thoroughly before reading

Manufacturer: K-Jump Health Co., Ltd No.56, Wu Kung 5th Rd., New Taipei Industrial Park, New Taipei City 24890, Taiwan


This digital thermometer is intended to measure human body temperature children and adults; it can be used in household environment. Fix this device on the armpit and make sure the probe touch the armpit well, wait for at least 10 minutes then use MomiSure APP to read back the temperature.


The digital thermometer is contraindicated: Place the thermometer probe in scarred tissue or tissue compromised by any disorders of measuring site


  1. No battery needed.
  2. Compact, accurate, reusable device.
  3. Very sensitive to take temperatures.
  4. Small light weight device, it is not water resistant.
  5. Easy to know the temperature by Near Field Communication (NFC).
  6. LED light up when NFC read-back.
  7. Free Charge APP




Measuring Range : 90.0~109.9°F
Accuracy : Less than 96.4°F, Greater than 106.0°F?±0.5°F 96.4°F to less than 98.0°F,
Greater than 102.0°F to 106.0°F?±0.3°F 98.0°F to 102.0°F?±0.2°F
Resolution : 0.1°F
NFC : Android mobile device with NFC iPhone7 or above, with iOS 11.0 or above
NFC Working Area : Within 2 cm
Dimension : S size: 160mmx23mmx8mm +/- 5%
M size: 180mmx23mmx8mm +/- 5%
L size: 200mmx23mmx8mm +/- 5%
Weight : Approx. 4g +/-2%
Operating Conditions : 60.8~104.0°F, R.H. of 15~95% non-condensing
Storage Conditions : -4~120°F, R.H. of 15~95% non-condensing
Guarantee of Quality : Certification ISO 13485




  1. Do not boil the device, instead, clean it by wiping with a dry cloth and disinfect with isopropyl (rubbing) alcohol. See cleaning instructions for details.
  2. Do not drop or expose the device to heavy shock.
  3. Do not bite or swallow the device.
  4. Do not attempt to disassemble the device.
  5. Do not let the device come into contact with any thinner or chemical solvents.
  6. Do not store the device under direct sunlight, at a high temperature, in high humidity or dust. Performance may be degraded.
  7. Keep out of reach of unsupervised children. Do not let children play with the device. TEMPERATURE SHOULD BE TAKEN UNDER ADULT SUPERVISION.
  8. Components may be harmful if swallowed. Contact a physician immediately should this occur.
  9. Clean the probe before storing.
  10. Do not attempt to disassemble the device.
  11. Do not put this unit in dishwasher.
  12. If the device has been stored at below-freezing temperatures, allow the device to warm naturally to room temperature before using.
  13. Performance of the device may be degraded if: Operated or stored outside stated temperature and humidity ranges or if the patient’s temperature is below the ambient (room) temperature.
  14. Before using, it is recommended to no excising for at least twenty minutes prior to do a measurement and no walk during measuring, it may cause inaccurate reading.
  15. The reading is for reference, if feel sick or uncomfortable, please contact the physician.



  1. Make sure the measuring site is dry, clean and free of sweat and cosmetics prior to measurement taking.
  2. Clean the probe before and after each measurement to prevent cross-contamination, see CLEANING & DISINFECTION.
  3. After cleaning and disinfection the probe, please wait for 2 minutes to do a measurement at least.
  1. Tie the device under the armpit and make sure the probe aim to the armhole.
  2. Install MomiSure APP from Google play, App Store or scan QR code to install it successfully then execute the APP.
APP from Google play
QR code
  1. Approach the NFC mobile device N position to read-back the temperature, shown as below figures.
  2. To take accurate temperature, recommend to do the measurement at least 5 minutes then do NFC read-back.

NOTE: Always disinfect the thermometer before use.

NOTE: Temperature readings vary from person to person and time to time; find your normal temperature and watch for changes. If you compare readings between two thermometers, it is possible to have different readings even both of them are within accuracy requirement.

For Android mobile device: Make sure the NFC area of the mobile device then put mobile device above the thermometer, the temperature will be read-back.

For iPhone7 or above: The iOS should be 11.0 or above and make sure the NFC area of the mobile device; press the NFC icon of APP then close to the thermometer, the temperature will be read-back.

Refer to the figure of NFC area


BODY TEMPERATURE: A person’s body temperature will usually be several tenths to one full degree lower in the morning than it is in the late afternoon. Therefore, if your temperature is 97.9°F in the morning, it could be 98.4°F or more in the late afternoon and still be normal. To determine what your normal body temperature is you should take your temperature both in the early morning and in the late afternoon over several days. Children have the same normal temperature range as do adults. A fever for both children and adults is typically defined as a temperature over 99.5°F. Exercise, excessive clothing, hot bath, hot weather, warm food and drink can cause mild elevations of up to 100.4°F to 101.1°F. If you suspect one of these to be the cause of an elevated reading, eliminate the possible cause and retake the temperature in a half hour.



  1. The device is not water resistant.
  2. Clean the probe before and after each measurement to prevent cross-contamination, see CLEANING & DISINFECTION.
  3. After cleaning and disinfection the probe, please wait for 2 minutes to do a measurement at least.

Cleaning process:

  1. Wipe the probe with a solution of 5-10% mild detergent about 10~15 seconds.
  2. Continuously wipe with cold water to avoid any chemical residues remaining on the device.
  3. If necessary, repeat step 1 and step 2 in order to make sure the device is clean.
  4. A final wipe down by a clean wipe is necessary to avoid water stains.

Disinfection process:

  1. To disinfect the device when completed the cleaning process.
  2. Wiping the probe with a cloth dipped in a disinfectant solution such as 70-75% isopropyl (rubbing) alcohol : contact time ?10 min for disinfection.

Drying process:

  1. After cleaning and disinfection process above.
  2. Put the device to air-dry in the room temperature 68-86°F, exposure time around 30~60 min.
  3. And store the device in a dry, clean, and dust-free environment at room temperature.

This device is guaranteed for one year from the date of purchase against manufacturer’s defect under normal, household use. Follow the directions closely will ensure years of dependable operation. If the device does not function properly, please contact the distributor.

LOT NO. (YYMM) on the device label means the manufacture month and the manufacture year. For example, “1910” means the device was manufactured in October, 2019.

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