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Operation Guide DQR-300
4
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.
THERMOMETER FUNCTIONS
Both the main unit and the sub-unit are equipped with their own temperature sensors. Temperature data measured
by the sub-unit is sent by wireless transfer to the main unit. You can toggle the main unit display between the main
unit temperature reading and the sub-unit temperature reading. This makes it possible to view both the indoor and
outdoor temperature on the main unit display.
Temperature Measurements
• Both the main unit and the sub-unit take temperature measurements every 16 seconds.
• 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 41°C (105°F), note that such
readings are actually outside the guaranteed temperature range of this clock.
Switching between Celsius and Fahrenheit
• Push the °C/ °F button (0) to select either Celsius (°C) or Fahrenheit (°F).
Celsius (°C) Fahrenheit (°F)
°C/ °F button (0)
°C
°F
Switching between Main Unit and Sub-unit Temperature Data
• Press the SELECT button (B) to toggle the display between the main unit (INDOOR) temperature and the sub-
unit (OUTDOOR) temperature.
Main unit temperature: INDOOR indicator displayed
Sub-unit temperature: OUTDOOR indicator displayed
• The display does not change to the sub-unit (OUTDOOR) temperature if no data has been received from the sub-
unit yet.
• Holding down SELECT button (B) for about two seconds causes the display to continually toggle between the
main unit and sub-unit temperature at five-second intervals.
Main unit Sub-unit
SELECT button (B)
INDOOR OUTDOOR
High Temperature and Low Temperature Memory
• The following data is stored in memory automatically.
Main unit high temperature and low temperature
Sub-unit high temperature and low temperature
• To clear the high temperature and low temperature data memory, press the CLEAR button (9).
New data starts to be stored after memory is cleared.
CLEAR button (9)
MAX/MIN TEMP. button (7)
Main unit high temperature and low temperature
Sub-unit high temperature and low temperature
Current temperature and humidity