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iPhone / iPad
  • Utilities
  • Food & Drink
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J-Thermo is an thermometer that plugs into audio jack of your iPhone/iPad.

-Plug and Play! No setup required
-Measurement range from -50 to 150 °C (-58 to 302 °F)
-125 mm stainless steel sensor probe
-Real-time temperature measurement in both °C and °F
-Highest, lowest temperature display
-No battery required.
-Temperature higher than 150 °C or 302 °F is treated as HH.H.
-Temperature lower than -50 °C or -58 °F is treated as LL.L.

How to use:
1. Open "J-Thermo" app.

2. Firmly plug the J-Thermo into the audio jack of iPhone/iPad and turn the headphone volume to maximum.The temperature reading shall be shown in a few seconds.

3. When you finished using J-Thermo, press "Done", then plug out J-Thermo from iPhone/iPad.

(Please make sure the app is opened when the iPhone/iPad is in portrait mode, otherwise the UI will be abnormal. An update will be released soon to fix this.)

If the J-Thermo is not showing the temperature reading, please check the following:
-If the app shows "No J-Thermo detected" or "No data from J-Thermo", please manually turn the headphone volume to maximum.
-If the app shows "Cannot access microphone due to privacy setting", then please turn ON the microphone accessibility in privacy setting for "J-Thermo" app.
-Please make sure "Volume Limit" is turned off in "Settings" of iPhone/iPad.
-For iPhone/iPad purchased in EU, the EU volume limit may apply to devices which means the headphone volume maybe lower, therefore it is not guaranteed that J-Thermo will work. If there is "EU Volume Limit" in "Settings", please turn it off and try.

Contact us:
If you have any enquiries, please contact
[email protected]