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Operation Guide ID-25B
3
Setting the Time and Date Manually
• When using the clock in an area that is outside of the range of the transmitter or in an area where signal
reception is impossible for some reason, you need to manually adjust the time setting as required.
1. Press the SET button (2) to cycle through the setting screens as shown below.
2. While the screen you want is on the display, use the Time Set buttons (1) to change the digits that are
flashing.
Press – to decrease the
flashing digits.
Press + to increase the
flashing digits.
• Holding down + or – changes the flashing digits at high speed.
• You can set the year in the range of 2000 to 2039. The day of the week is set automatically in accordance with
the date setting.
• Pressing + or – while the Time Setting Screen is on the display causes the seconds count to be reset to 00.
• Each press of + or – while the 12-hour/24-hour Timekeeping Screen is on the display toggles between 12-hour
and 24-hour timekeeping.
3. After making the settings you want, use the SET button (2) to display the Normal Timekeeping Screen.
• The clock automatically returns to the Normal Timekeeping Screen if you leave a setting screen on the display for
about three minutes without performing any operation.
Year Setting Screen 12-hour/24-hour Timekeeping Screen
Month and Day Setting Screen Time Setting Screen
Normal Timekeeping Screen
THERMOMETER FUNCTIONS
• A built-in sensor measures temperature and shows the measured value on the display. The readout from the
temperature sensor can also be switched between Celsius (°C) and Fahrenheit (°F).
• The temperature display shows “LO” for temperatures below –50°C (–58°F) and “HI” for temperatures above
70°C (158°F).
• Though temperature readings are displayed up to 0°C (32°F) and greater than 40.1°C (104°F), note that such
readings are actually outside the guaranteed temperature range of this clock.
Switching between Celsius and Fahrenheit
• Slide the °C / °F switch (6) to specify Celsius (°C) or Fahrenheit (°F) as the temperature unit.
HYGROMETER FUNCTION
• A built-in sensor measures humidity and shows the measured value on the display.
• The humidity display shows “LO” for humidity below 10% and “HI” for humidity above 95%.
BATTERY REPLACEMENT
Replace batteries whenever the display of the clock becomes dim and difficult to read.
1. Pressing down lightly on the battery compartment cover, slide it downwards and remove it.
2. Remove all of the old batteries.
3. Load a full set of new batteries. Make sure that their positive (+) and negative (–) ends face in the correct
directions. If you load batteries incorrectly, they can burst and damage the clock.
4. Replace the battery compartment cover.
5. Press the RESET button (3). Be sure to press the RESET button (3) after replacing batteries.
Battery precautions
• Keep batteries out of the reach of small children. If a battery is accidentally swallowed, contact your physician
immediately.
• Be sure to load the batteries with their positive (+) and negative (–) ends facing correctly.
• Never mix old and new batteries, or batteries of different brands.
• Never charge the batteries that come with the clock.
• Should batteries ever leak while in the clock, wipe out the fluid with a cloth, taking care not to let any get onto
your skin.
• Replace the batteries at least once a year, even if the current batteries are working properly.
• The batteries that come with the clock lose some of their power during transport and storage.