National Geographic 259NE - Manual (Page 5)

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NOTE: Five years of data will be retained even if the battery is removed or the unit
is reset. After five years the oldest data will be replaced with the newest recorded
temperature data.
6.0 Year to Date History
The unit can also recall the recorded Max/Min outdoor temperature of the same date
last year, 2 years ago, and so on.
Example: if todayʼs date is 03/25/07 the unit will recall the Max/Min temperature for
03/25/06, 03/25/05, 03/25/04 etc. up to 5 years back.
1. Press the HISTORY button once, the monitor will display the recorded Max/Min
temperature of the same date last year; press the HISTORY button again to see
the temperature from two years ago, etc.
7.0 Maximum and Minimum Temperature
1. Press the MAX/MIN button once to display the maximum readings. Press the MAX/
MIN button again to display the minimum readings.
2. To clear the memory, press the CLEAR button when the Max/Min temperature is
displayed. It will clear the record of the shown field.
NOTE: Clearing the Max/Min temperature will not clear the recorded highest and
lowest temperature.
8.0 ºC/ºF Switchable
The default measurement for temperature is °F, press the ºC/ºF button to toggle
between °C and °F.
9.0 Signal Detection
The signal indicator on the monitor will display the following in the outdoor
temperature window:
No Signal Detected
Signal Detected
Successful Reception
10.0 Care of Your Thermometer
• Avoid exposing the thermometer to extreme temperatures, water or severe shock.
• Avoid contact with any corrosive materials such as alcohol, cleaning agents or
perfume.
• Do not subject the thermometer to excessive force, shock, dust, temperature or
humidity. Any of these conditions may shorten the life of the thermometer.
• Do not tamper with any of the internal components of this thermometer. This will
void the warranty and may cause damage.