General Tools DTH03A User Manual [en, es, fr]

DTH03A

USER’S MANUAL

DIGITAL TEMPERATURE

HUMIDITY MONITOR

Please read and follow the manual carefully.

INTRODUCTION

This unit measures temperature and humidity. It can display time and date,
and determine whether the environment is too wet or too dry. Alarm function,
temperature unit selection, storage of max. and min. temperature and humidity
values are available. It has a large display and is easy to use.

FUNCTION

• Current time and date display

• Time alarm function

• 12/24 hours clock

• ºC/ºF temperature

• Relative humidity and relevant comfort level

• Real time indications of temperature and humidity fluctuation

SPECIFICATIONS:

Temperature range: 14° to 122°F (-10º to 50ºC)
Storage temperature: 14° to 140°F (-10º to 60ºC)
Resolution: 0.2ºF (0.1ºC); 1%RH
Temperature accuracy: ±2.0ºF (±1.0ºC)
Humidity range: 20% - 90% RH
Humidity accuracy: 3%
Response time: Once every 10 seconds
Resetting response: The display lights up for about 3 seconds, the built-in

Unit size: 4.3" x 4.0" x 0.9" (108 x 101 x 23mm)
Display size: 3.2" x 2.3" (80 x 58mm)
Digital height: 0.9" (23mm)
Weight: 4.4 oz. about 125g (includes battery)
Power source: 1 “AAA” battery (included)

buzzer beeps

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LCD INDICATOR MEANING

1. Temperature fluctuation indicator

2. Min. temperature

3. Max. temperature

4. Humidity fluctuation
indicator

5. Alarm set time or alarm
setting indicator

6. Post Meridiem
(indicator in 12 hours
mode clock)

7. Month

8. Alarm function enabled

9. Day

10. Max. humidity 11. Min. humidity

12. Environment is too dry 13. Environment is too wet

14. Relative humidity value 15. Environment is comfortable

16. Temperature value

BRIEF DESCRIPTION FOR BUTTON FUNCTION

RESET

Cancel all settings and make the meter return to the default readings

MODE

• Change between current time and date modes

• Enter time setting mode

• Select the desired reading to be adjusted

SET ALM

• Adjust the flashing reading

• Disable or enable time alarm function

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ALM/CLEAR

• Display the alarm set time

• Enter the alarm setting mode

• Erase the currently displayed max. or min. temperature and humidity readings

ºC/ºF

• Change the temperature’s unit between ºC and ºF

• Change the meter between a 12 and a 24 hours clock

MAX./MIN.

• Display the max. or min. temperature and humidity

• Make the unit return to current temperature and humidity mode

OPERATION INSTRUCTION

NOTE: Every paragraph is independent.

The two flashing dots between hour and minute readings on LCD indicate
the current time mode.

1. RESET

Press RESET to erase all settings and the meter returns to the default settings
(the default time—12:00 in 24 hours clock mode, the default date—1-01,
first January).

2. TIME, DATE AND SETTING

Make sure that the meter is in current time mode.

• Press Mode to change between current time and date modes. If the meter

is in date mode, it will return to current time mode 8 seconds later
automatically.

• To enter time setting mode, press and hold Mode until the hour reading

flashes, and flashing reading can be adjusted by pressing Set Alm (or hold
Set Alm for fast scroll). In this mode, press Mode to step through the
selections: hour > minute > month > day > exit.

If you do not operate the meter for 8 seconds, it will return to current time
mode.

3. ALARM FUNCTION

In the current time or date mode, press Set Alm to disable or enable time alarm
function. When the time alarm function is enabled, “ ” appears on the LCD.

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4. ALARM SET TIME AND SETTING

To display the alarm set time, just press Alm/Clear, and the “AL” appears.
To enter alarm setting mode, press and hold Alm/Clear until the hour reading of

the alarm set time flashes, press Set Alm to adjust reading (or hold Set Alm for
fast scroll).

In this alarm setting mode, press the Alm/Clear to step through the selections:
hour > minute > exit.

5. ALARM

After the time alarm function is enabled, the meter will beep for one minute on
the alarm set time set by you, you can make the meter stop beeping by
pressing any button.

6. TEMPERATURE AND RELATIVE HUMIDITY

Normally, the LCD shows the current temperature and relative humidity.
Press Max./Min. to display the max. temperature and relative humidity values

since the previous max. temperature and relative humidity values were erased.
“MAX” appears as an indication.

Press Max./Min. to display the min. temperature and relative humidity values
since the previous min. temperature and relative humidity values were erased.
“MIN” appears as an indication.

Press Max./Min. once more to display the current temperature and relative
humidity values.

When the display is showing the max. or min. temperature and relative humidity
values, you can press Alm/Clear to erase the currently displayed values,
3 seconds later the meter returns to current temperature and relative humidity
mode.

7. TEMPERATURE UNIT

In the current clock or date mode, pressing the “ºC/ºF” button will switch the
temperature reading in ºC or ºF.

8. 12/24 HOURS CLOCK

In the current clock mode, press and hold ºC/ºF button for 2 seconds to change
between a 12 and a 24 hours clock, meanwhile the meter will beep as in
indication (in the 12 hours clock mode, “PM” may appear on the LCD).

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9. INDICATION FUNCTION

• Comfort degree indication

When the temperature is between 68º to 78.8ºF (20º to 26ºC), and the relative
humidity is between 40% and 70%, the LCD will show

COM”, it means that the environment is comfortable.

“
When the relative humidity is between 70% and 90%, the LCD will show

“

WET”, it means that the environment is too wet.

When the relative humidity is between 20% and 40%, the LCD will show

DRY”, it means that the environment is too dry.

“
There will be no face icon shown if the humidity is between 40% and 70% with

the current temperature out of range of 68º to 78.8ºF (20º to 26ºC).

• Overrange indication

When the relative humidity is less than 20%, the LCD will show “Lo%”
When the relative humidity is more than 90%, the LCD will show “HI%”

• Temperature and humidity fluctuation indications

If the current temperature is higher than the temperature of the previous
period (a period is 10 seconds), the symbol “ ” appears. “ ”
means the current temperature is the same as the previous period’s
temperature. “ ” means the current temperature is lower than the
previous period’s temperature. By the same method, humidity fluctuation is
also indicated.

TIP

When a reading flashes, you can press Set Alm to adjust it. The meter will
return to the current clock mode from any other mode if you don’t operate it for
8 seconds.

NOTE

Whenever the meter fails, press RESET first. If RESET button doesn’t function,
replace the battery with a new one of the same type (“AAA”).

The meter’s temperature range is between 14° to 122°F (-10º to 50ºC).

DISPOSAL OF THIS ARTICLE

If you at some point intend to dispose this article, then please keep in mind that
many of its components consist of valuable materials, which can be recycled.

Please do not discharge it in the garbage bin, check with your local
council for recycling facilities in your area.

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