CDN THD2FE User manual

NON-CONTACT FOREHEAD
THERMOMETER
Forehead mode: 93.2 to 108°F/34 to 42.2°C
Surface mode: -7.6 to +176°F/-22 to +80°C
Model THD2FE

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Note: In the following instructions, names of the
control buttons are shown in CAPS. Function
information that appears on the display is shown in
BOLD CAPS.
USAGE
Indications for Use
The Non-Contact Forehead Thermometer is an
infrared thermometer intended for the intermittent
measurement of human body temperature in people
of all ages.
Intended Operator:
At least 11 years old (5 years intensive reading
experience), no maximum.
Ambient Temperature
If there is any temperature difference between the
places where the device is stored and where it will
be used, allow the thermometer to adjust to the
room temperature where the subject is for at least
15 minutes before measurement.
Points of Attention
1. Forehead temperature is displayed in oral mode.
This mode converts the forehead temperature to
display its “oral-equivalent” value.
2. Before the measurement, the subject should stay
in a stable environment for 5 minutes and avoid
exercise or bath for 30 minutes.
3. Keep the forehead area clean and free from sweat,
cosmetics and scars while taking the temperature.
4. The “Clinical Bias” is -2.5 to -3.1°F (-1.4 to -1.7°C).
5. The “Limits of Agreement” is 0.98.
6. The “Repeatability” is 0.36°F (0.20°C)

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BEFORE WE BEGIN
This thermometer has been designed for home
use. It is not meant to replace a visit to the doctor.
Compare the measurement result to your regular
body temperature. Consult with doctor if you have
health concerns.
BATTERY INSTALLATION
Replace battery when the Low Battery icon ( )
indicates the battery is low. Power off the unit before
installing the batteries. A malfunction may occur if
the power is on when the battery is installed. If a
malfunction occurs, restart the device.
1. Remove battery cover by using
the thumbs to push battery cover
out.
2. Install two 1.5V AAA batteries
observing polarity shown in
compartment.
3. Replace the battery cover until it
clicks shut.

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OPERATING INSTRUCTIONS
A. On/Off
1. Press the POWER button ( ) to turn the
thermometer on.
2. Forehead is the default mode. The Forehead
icon ( ) appears on the display and two beeps
sound when ready.
3. Press the POWER button ( ) for 5 seconds to
turn the thermometer off.
4. The THD2FE will automatically turn off after
1 minute of inactivity.
B. Temperature Scale
Note: When the temperature scale is changed, the memory is cleared.
To select temperature reading in Fahrenheit or
Celsius:
1. Power off the unit.
2. Press and hold the START button, then press
and hold the POWER button for 3 seconds.
3. The °F symbol changes to the °C symbol on
the display or vice versa.
C. LCD Backlight
The backlight will turn on automatically for
5 seconds when a reading is taken.

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D. Forehead Mode
Forehead is the default mode of the THD2FE.
1. Make sure that the sensor lens is clean and
undamaged and that the forehead is clean.
2. Hold the sensor lens 1.5 inches (4 cm) or less
from the center of the forehead and press
the START button to get the temperature
measurement.
3. Wait for the Forehead icon ( ) to stop ashing
before taking the next measurement.
a. Temperature Alert
If the thermometer detects a temperature
≥99.5°F (37.5°C), three short beeps sound
followed by one long beep.
b. Silent
i. When the THD2FE is on, press and hold
the POWER button for 3 seconds.
ii. The silent icon ( ) ashes on the display.
iii. Release the POWER button to silence the
alert.
iv. Repeat to turn the alert on again.
Note: If the POWER button is pressed for 5 seconds after
the silent icon has begun ashing, the device will power off
without setting the alert to silent.
c. Memory
Recall up to 25 readings.
Note: As the memory gets full, the newer readings will replace
the older readings.
i. When the THD2FE is on, press the
POWER
( ) button to see the temperature records
in memory.
ii. The memory icon ( ) appears on the

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display.
iii. Press the Power button again to cycle
through all of the previous readings
starting with the most recent.
E. Surface Mode
Note: The surface mode shows the actual and unadjusted surface
temperature which is different from the body temperature. It can
help you monitor if the object temperature is suitable for the baby or
patient, for example the baby’s milk.
1 Turn the thermometer on
2. Press and hold the POWER button and press
the START button once to enter Surface mode.
3. The surface icon ( ) appears on the display.
4. Aim the sensor lens at the target and press
the START button to display the surface
temperature.
5. Press and hold the START button to get
continuous measurements.
Note: Applications include temperature measurements for water,
milk, cloth, skin or other objects.
Note: This mode shows the actual and unadjusted surface
temperature which is different from the body temperature.
Important: HAND WASH AND DRY. DO NOT IMMERSE IN
LIQUID.

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F. Trouble Shooting
Error Message Problem Solution
Error 5-9, the system is not
functioning properly.
Unload the battery, wait for 1
minute and repower it. If the
message reappears, contact
CDN for further assistance.
Measurement before device
stabilization.
Wait for “Er1” to disappear.
The ambient temperature is not
within the range between 50 to
104°F (10 to 40°C).
Allow the thermometer to rest in
a room for at least 15 minutes at
room temperature: 50 to 104°F
(10 to 40°C).
Forehead mode: Temperature
taken is higher than 108°F
(+42.2°C)
Surface mode: Temperature
taken is higher than 176°F
(+80°C) Select the target within
specications. If a malfunction
still exists, contact CDN for
further assistance.
Forehead mode: Temperature
taken is lower than 93.2°F
(+34°C)
Surface mode: Temperature
taken is lower than -7.6°F
(-22°C)
Device cannot be powered on to
the ready stage.
Replace batteries with new
batteries.

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E. Battery Status
The thermometer incorporates visual battery
status indication:
1. Battery OK: measurements are possible
2. Battery Low: replace battery with two 1.5V
AAA alkaline cells; measurements are possible
3. Battery Exhausted: replace battery;
measurements are not possible
CARE OF YOUR PRODUCT
• The sensor lens is the most delicate part of the
thermometer and should be kept clean at all times.
Take care when cleaning the lens. Use only a
soft cloth or cotton swab with water or rubbing
alcohol. Allow the lens to dry fully for at least
1 minute before using the thermometer.
• Do not submerge any part of the thermometer in
liquids. Keep it dry and away from any liquids and
direct sunlight. Wipe clean with a damp cloth.
• Store the thermometer at room temperature
between -4 to +122°F/–20 to +50°C, RH ≤85%.
• Avoid holding the thermometer too long. This
could cause the body temperature measurement
to be lower than usual.

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PRECAUTIONS
• Dispose of used batteries promptly and keep away
from children.
• Keep the thermometer and batteries away from
children.
• Do not clean the case with abrasive or corrosive
compound, which may scratch the plastic and
corrode the electronic circuits.
• Do not subject the unit to excessive force shock,
dust, temperature or humidity, which may result in
malfunction, shorter electronic life span, damaged
battery and distorted parts.
• Do not tamper with the unit’s internal components.
Doing so will invalidate the warranty on the unit
and may cause unnecessary battery damage and
distorted parts.
• Do not subject the unit to excessive exposure to
direct sunlight. The unit is not waterproof — do
not immerse it into water or expose to heavy rain.
• To avoid deformation, do not place the unit in
extreme temperatures.
• Do not use the thermometer in a microwave oven.
• Always read the user manual thoroughly
before operating.

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SPECIFICATIONS
Measurement Range Forehead mode: 93.2 to 108°F/34 to 42.2°C;
Surface mode: -7.6 to +176°F/-22 to +80°C
Unit of Measure °F/°C
Resolution 0.1°F/0.1°C
Water Resilience IP22: protected from solids bigger than
12.5 mm (e.g. ngers); dripping water when
enclosure tilted up to 15°
Accuracy
Forehead mode: 95 to 107.6°F/35 to 42°C:
±0.4°F/0.2°C, otherwise ±0.5°F/0.3°C;
Surface mode: 71.6 to 108°F/22 to 42.2°C:
±0.5°F/0.3°C, otherwise ±4% or ±4°F/2°C
whichever is greater
Measurement Distance Within 1.5 in/4 cm
Distance:Spot Surface mode: 1:1
Emissivity Surface mode: 0.95
Operating Range 50 to 104°F/10 to 40°C, 15% to 85% RH
Storage Range -4 to +122°F/-20 to 50°C, RH ≤85%
Power Supply Two AAA 1.5V IEC LR03 alkaline batteries,
included
Product Dimensions 1.89 W x 6.22 H x 1.58 D (in)/
4.8 W x 15.8 H x 4.02 D (cm)
Weight 3.5 oz / 100 g (including battery)