Press down and hold the battery cover with your finger and apply some force to slide the cover backwards to open the battery compartment. Refer to the battery polarity symbols to orient the batteries properly during installation. Make sure that the new batteries are correctly installed in the battery compartment and that the batteries' polarities are correct. Put the battery cover back on to close the battery compartment.
After powering on and performing the initial self-test, the thermometer will automatically detect and display the battery level. (Please ignore the battery level indicator during power-on and self-test.)
Note: The thermometer is supplied with two 1.5 V type AAA (FR 03) batteries. For best performance, we recommend non-rechargeable FR03 batteries.
Attach a probe cover To achieve accurate measurements, make sure a new, clean probe cover is put in place before each measurement.
When attaching a new probe cover, please make sure that the probe cover presses against the probe cover detection point at the bottom of the thermometer probe.
Power on and self-check
Press the Power On/Measure button [🌡], and the ear thermometer will power on with an accompanying beep. The device will first run a self-check, and all on-screen icons will be displayed during the check. If the device completes the self-check successfully, it will be ready for use. The device will not be usable if any of the following conditions occurs:
No replaceable probe cover attached
If the probe cover is not installed correctly, a fault will be detected, and the corresponding icon will be displayed on the screen. The device will not be able to measure temperature. The screen will automatically turn off after a set period of time. If the Power On/Measure button [🌡] is pressed, the device will beep four times (no beeping if in silent mode).
※ The device will return to normal operating mode after it detects that a probe cover is properly installed.
Probe warming is in progress
While the probe is warming up, the screen will display the "" icon and “- - - ℉” or "- - - ℃"; no measurement can be taken during this period. The screen will automatically turn off after a set period of time. If the Power On/Measure button [🌡] is pressed, the device will beep four times (no beeping if in silent mode).
※ The device will enter normal operating mode after it is warmed up.
When this malfunction is detected, the device will not be usable, and the screen will automatically turn off within 30 seconds.
When the low battery icon is shown on the screen, the device will cease to function, and the screen will turn off within 30 seconds.
Ear temperature measurement
Press the Power On/Measure button [🌡], and the thermometer will power on with a beep. When self-check starts, the screen will turn on, and the device will beep to signal the completion of self-check.
When "- - - ℉" or "- - - ℃" appears on the screen, keep the patient's head steady and gently tug the ear to straighten the ear canal. Then place the probe into the ear canal and align towards the eardrum. Make sure the probe completely fills the ear canal.
※ When inserting the probe, the ear thermometer sensor should be aligned towards the eardrum. If the probe is not properly aligned, the measured temperature will be lower than the actual body temperature.
Methods of straightening the ear canal
Children under one year: Pull the ear straight back.
Children of one year or older and adults: Pull the ear up and back.
Press the "Power On/Measure" button [🌡] to start the measurement. After the measurement is done, there will be a beep, and the result will be displayed on the screen.