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SPECIFICATIONS
Temperature-Range: 32 to 122 °F / 0 to 50 °C
Resolution: 0.1°
Accuracy: ±1°C/±2°F
Relative Humidity-Range: 20 to 95% RH
Resolution: 1%
Accuracy: ±3.5% RH mid-range
otherwise ±5.5% RH
Display Update: 10 seconds
OPERATION
To turn the unit on, press the ON/OFF button
located on the back of the unit. When the unit
is turned on, the display will show all segments
and will then show “- -”. After approximately 10
seconds, the unit will display the current temperature
and humidity. Press the ON/OFF button located on
the back of the unit to turn the unit off. To conserve
battery life, always turn the unit off when not in use.
DISPLAYING °F OR °C
To display the temperature reading in Fahrenheit or
Celsius, slide the °C/°F switch located on the back
of the unit.
ABOUT THE MEMORY
Minimum and maximum memories are NOT
programmable. The minimum temperature and
humidity recorded into memory are the minimum
temperature and humidity achieved since the last
time the memory was cleared. The maximum
temperature and humidity recorded into memory are
the maximum temperature and humidity achieved
since the last time the memory was cleared. The
minimum and maximum memories are maintained
over the period since the memory was cleared.
VIEWING THE MEMORY
1. To view the maximum temperature and
humidity achieved, press the MAX/MIN button.
“MAX” will appear on the display.
2. Press the MAX/MIN button a second time,
within 10 seconds, to view the minimum
temperature and humidity achieved.
“MIN” will appear on the display.
Note: Ten (10) seconds after pressing the MAX/MIN
button, the unit automatically returns to the current
temperature/humidity reading.
3. Press the MAX/MIN button a third time,
within 10 seconds, to return to the current
temperature/humidity reading.
CLEARING THE MEMORY
To clear the maximum and minimum memory,
press and hold the MAX/MIN button for 3 seconds,
the display will show “- -” for approximately 5
seconds. The unit will then display the current
reading for the selected display mode (current,
MAX, or MIN).
The maximum and minimum memory is also
cleared when the unit is turned off, and when the
RESET button is pressed.
DISPLAY MESSAGE
“- -” appearing on the display for temperature or
humidity, while taking measurements, indicates
that the value being measured is below or above
the range of the unit.
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ALL OPERATIONAL DIFFICULTIES
If this unit does not function properly for any reason,
press the RESET button located on the back of
the unit. If the unit does not function properly after
pressing the RESET button, replace the battery
with a new high quality battery (see the “Battery
Replacement” section). Low battery power can
occasionally cause any number of “apparent”
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ERROR SYMBOLS
Symbol Description Action required
Low battery voltage Replace the battery
1. Sensor open or
- -
short circuit
2. Reading is out of
measurement limit
with the same type
1. Return thermometer
for repair
2. Keep measurement
within the limits
BATTERY REPLACEMENT
A faint display, incorrect display, or no display are
all indicators that the batteries must be replaced.
Remove the battery cover by placing your thumb
in the slot at the bottom of the battery cover and
pulling up. Remove the exhausted batteries and
replace with a new 3V battery, Replacement
Battery Cat. No. 1005. When replacing the battery,
see the battery cover for proper battery placement.
Replace the battery cover.
TRACEABLE
HUMIDITY/
TEMPERATURE
PEN
INSTRUCTIONS
®
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www.GlobalTestSupply.com
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