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Dr.Prepare EWT86121 - Receiving RF Signals; Auto Time Calibration; Time Setting Mode

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b. Since the cover of the sensor is designed to be splash-resistant, it
may take 36-48 hours for the sensor to measure temperature
readings that are relatively accurate.
c. Please ensure the wireless range between the alarm clock and the
sensor is within 200 feet (60 m).
Step 3. Short press the +/CH button to select the channel number that
has been set on the wireless sensor in the previous step. The icon of
channel number flashes in sequence of 1, 2, and 3. If signal of the
sensor is not received by your alarm clock, the symbol "-" will appear
on the screen.
Receiving RF
a. RF reception lasts for up to 3 minutes.
b. During RF registration, the antenna icon starts to flash.
c. When the RF is successfully registered, the icon is displayed.
d. If the reception fails once in the later synchronization, the icon
will disappear.
e.
If the reception succeeds in the later synchronization, the icon
will appear again and the outdoor temperature and humidity will be
updated.
f. If the alarm clock fails to receive RF signals more than 1 hour, it will
display the latest temperature and humidity before the update.
The alarm clock automatically receives RF signals for 3 minutes after
the weather clock is plugged in.
Auto Time Calibration via MSF Signals
After the clock receives RF signals and displays temperature
readings, it starts searching for MSF signals for time calibration.
Press and hold the “+/CH” key for two seconds to re-register data
from the current channel.
Reception of RF signals
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