CT-561 - Thermometer CITIZEN - Free user manual and instructions

Product Type	Digital Thermometer
Brand	Citizen
Model	CT-561
Measurement Type	Contact (oral, rectal, underarm)
Temperature Range	32.0°C – 42.9°C (89.6°F – 109.2°F)
Accuracy	±0.1°C (between 35.5°C – 42.0°C)
Display	LCD, 3.5 digits
Power Supply	1× CR2032 3V lithium battery
Auto Power Off	After approximately 1 minute of inactivity
Memory	Recalls last measurement
Measurement Time	Approximately 60 seconds (oral)
Dimensions	15.0 × 2.0 × 1.0 cm
Weight	20 g (including battery)
Material	ABS plastic body, stainless steel sensor tip
Water Resistance	Splash proof (do not submerge)
Cleaning	Wipe with 70% isopropyl alcohol before and after use
Storage Conditions	Dry place, 10°C – 40°C, avoid direct sunlight
Warranty	2 years from date of purchase
Certifications	CE, FDA listed
Intended Use	For household use, not for continuous monitoring

Frequently Asked Questions - CT-561 CITIZEN

How do I switch between Celsius and Fahrenheit?

When the thermometer is off, press and hold the power button for about 3 seconds until the display shows "°C" or "°F". Release the button to toggle. The unit will beep to confirm.

How long does it take to get a reading?

Typically, the thermometer beeps after about 60 seconds when used orally. Rectal measurements are faster, while underarm may take slightly longer. Always wait for the beep.

Can I use this thermometer on infants?

Yes, it is safe for infants. For children under 3 years, it is recommended to use the rectal method for the most accurate reading. Clean the tip thoroughly before and after each use.

How should I clean the thermometer?

Wipe the sensor tip and body with a soft cloth dampened with 70% isopropyl alcohol. Do not use abrasive cleaners or submerge the device in water. Allow it to air dry before storage.

What does the battery indicator mean?

If a low battery symbol appears on the LCD, replace the CR2032 battery promptly. Open the battery compartment with a small screwdriver, insert the new battery with the correct polarity, and close securely.

Why does the thermometer show an error message?

Common error codes: "Err" or "Lo" appear if the temperature is below 32.0°C (89.6°F) or if the probe is not placed correctly. Ensure proper contact and wait for the device to stabilize. If the error persists, replace the battery.

Can I recall previous measurements?

Yes, the thermometer stores the last reading. To view it, press the power button when the device is off. The memory value will be displayed with a special icon. Note: only the most recent measurement is saved.

How can I ensure accurate measurements?

Wait at least 30 minutes after eating or drinking before taking oral temperature. Do not measure on sweaty skin. Keep the probe under the tongue in the heat pocket. For best results, follow the position instructions in the user manual.

What should I do if the thermometer gets wet?

Although splash proof, if it gets wet, immediately wipe it dry with a soft cloth. Do not use until completely dry. If moisture enters the battery compartment, remove the battery and let it dry for 24 hours. Do not use heat to dry.

How should I store the thermometer when not in use?

Store the thermometer in its protective case in a cool, dry place away from direct sunlight and extreme temperatures. Keep out of reach of children. Remove the battery if storing for a long period.

USER MANUAL CT-561 CITIZEN

OPERATION

1. Press the ON/OFF switch to activate the thermometer and 188.8 ^oC will show on the LCD display window to insure all parts of the display are functioning properly. By holding down the ON/OFF switch, the display will show the last temperature until the switch is released.

2. When release the ON/OFF switch, 36.5°C(97.7°F) will show on the display and then the L with flashing°C(°F) indicates the thermometer being ready to take a temperature. The temperature reading should take about ninety seconds.

3. When the peak temperature has been reached, ° C( ° F) will stop flashing and beeper will sound for four seconds.

4. To turn the unit off, press the ON/OFF switch. If the thermometer is inadvertently left on after use, it will automatically shut-off in 10 minutes.

Remark: 1. If the ambient temperature is higher than 32.0°C(89.6°F) , the display will not show L°C ( L°F ) after showing 36.5°C(97.7°F) .

1. If the temperature goes lower than 32.0°C(89.6°F), the display will only show L°C (L°F), but if the temperature goes higher than 44.0°C(111.2°F), it will show H°C (H°F) only.

3.Temperatures should only be taken under the supervision of an adult and it is not suggested to take a rectal temperature with our thermometer.

ORAL USE

Put the probe tip under the rear part of the tongue and close the mouth tightly to insure accurate readings. Normal oral temperature is 37.0°C(98.6°F) .

AXILLARY USE

The probe tip should be placed under the armpit and hold the temperature parallel to the body and put the arm on the chest so the probe tip is well covered by the arm. NOTE: axillary temperature is usually 0.5°C(1.0°F) lower than oral readings.

Remark: When taking your temperature, please use the thermometer in the same position to measure in the same time period.

THERMOMETER CLEANING

You can clean thermometer by wiping it with soap and water or 70% Isopropyl Alcohol whenever you take your temperature.

CHANGING THE BATTERY

When the battery is weak and shows the symbol, change the battery to insure precise temperature readings. To replace the battery, use a small sharpened item to push the small hole to unload the battery cover. Pull out the battery compartment with the hook on the cover. Remove the battery and insert a new battery with positive (+) side facing up and slide back the cover.

WARNING

1.Do not let the thermometer fall or twist the unit.

1. Keep it off all chemical solvents, direct sunshine or high temperature.

3.Do not operate the product near transmitter which have high voltage or high frequency wave.

4.Do not recharge the battery or dispose it in fire.

5.Cleaning the thermometer prior to each use to evade cross infection in oral use.

SPECIFICATIONS

DISPLAY: liquid crystal display 3 1/2 digits

DISPLAY RESOLUTION: 0.1°C OR 0.1°F

MEASUREMENT RANGE: 32.0°C(89.6°F) to 44.0°C(111.2°F)

ACCURACY:±0.1°C from 35.5°C to 42.0°C within the ambient

temperature 18°C-28°C; otherwise±0.2°C (for CT561C)

±0.2°F from 95.9°F to 107.6°F within the ambient

temperature 64.4°F-82.4°F; otherwise±0.4°F (for CT561F)

BATTERY: one 1.5v button size battery (LR41 or equivalent)

BATTERY LIFE: about 18 months while used 10 minutes per day

RECOMMENDED MINIMUM MEASURING TIME: Oral -- 90 seconds

Armpit -- 3 minutes

AUTOMATIC SHUT-OFF: after approximately ten minutes

OPERATING TEMPERATURE: 10 -40°C (50.0-104.0°F) HUMIDITY: 15 - 95% RH

STORAGE TEMPERATURE: -20 -60°C (-4.0-140.0°F) HUMIDITY: 15 - 95% RH

DIMENSIONS: 130.8 mm X 18.2 mm X 11.6 mm

WEIGHT: 11.2 grams (including battery)

This clinical digital thermometer comply with EN 60601-1,EN60601-1-2,EN 12470-3; and Technical document refer to our EU representative.

● CITIZEN is a registered trademark of Citizen Holdings CO., Japan.

● Design and Specification are subject to change without notice.

3F-2. No.26, Lane 513, Jui-kuang Road, Taipei, Taiwan, R.O.C

Tel:[phone] Fax:[phone]

EU Representative:

SIR'S PELLE

VIA RAVENNA 3

21017 SAMARATE (VA) ITALY

TEL:[phone] FAX:[phone]

CE0197