User's Manual

Thermometer eTE-89B4 User Manual V1.0
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 After strenuous exercise, take a rest for at least 30 minutes before
measuring.
 Keep your ears and forehead clean and dry before measuring the
temperature.
 The interval measurement time needs 3S.
 Usually the temperature of the left and right ears will be slightly different, so it
is recommended to measure the same ear multiple times.
2. Unit conversion
In the state of shutdown, press and hold the measurement button for 5 seconds .It will
displays --- ℃. Then press the button again to switch into--- ℉ .
3. Memory query
 Query on the device.
Press and hold the power button in standby mode for about 4 seconds, the screen will
display For/Ear, you can press the button to query. There are a total of 24 groups of local
data. The ear temperature and the forehead temperature mode are each 12 groups.
 Query on the APP.
Connect your phone to the APP through Bluetooth. And then view historical data on the
APP.
4.Replace the batteries.
This device uses 2 pieces AAA batteries. When the screen displays “LOL”, it
indicates that the battery is low. Please replace the battery as follows:
 Push the battery cover at the bottom of the device in the direction indicated
by the arrow.
 Take out the old batteries and install the new batteries correctly according to
the positive “+” and negative “-” of the battery.
 Close the battery cover. If it is not used for more than 3 months, remove the
batteries to prevent the battery liquid from flowing out.
5.Cleaning instructions.
 Sensitive head is the most important part of the device, and the front mirror is
fragile. The sensitive head can be cleaned with cotton swab or soft cloth with