Clinical Digital Oral Thermometer

Based on 15 reviews
In stock
Olivia Appleton - Medical Content Writer
Olivia Appleton
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist
How we ensure accuracy in our content

What is a digital thermometer?

When a fever strikes, it's important to identify it quickly. A digital thermometer is a device that allows you to quickly and accurately take a temperature and can be a vital tool in managing illness. A digital thermometer can be used in different ways to measure a temperature and provides a quicker reading than traditional thermometers.


Why should you take your temperature?

Checking your body’s temperature with a thermometer is an easy way to identify a fever. It can provide useful information to a doctor or pharmacist so they can provide a suitable treatment for your illness.

What is causes a fever?

A normal body temperature is around 37°C. A fever is usually when your body temperature is 37.8°C or higher. It can cause you to feel warm, cold or shivery. A fever is your body’s natural response to many common illnesses such as:

  • Flu
  • Tonsillitis
  • Kidney or urinary tract infections (UTIs)

A fever stimulates your immune system to help your body fight infections. Through increasing your body[‘s temperature, a fever makes it harder for bacteria and viruses to survive.

When to seek medical advice

Seek medical attention if:

  • You have severe thirst or reduced urine output
  • You are passing urine that is darker than normal
  • You are light-headed or weak
  • You have new, severe muscle cramps
  • Your symptoms have worsened, or you notice new symptoms
  • You’ve had a fever after recent foreign travel


How does a digital thermometer work?

Digital thermometers contain a small computing mechanism and a resistor. A change in temperature causes the sensor to notice a change in resistance, which the computer converts the difference in resistance into a difference in temperature and shows this difference as a reading in degrees. Digital thermometers can be used to measure a temperature in yourself or your child, as well as checking the temperature of your child’s bath water or bottle.


How to use a digital thermometer

There are two main ways that you can take a temperature using a digital thermometer.

By mouth

Older children and adults can usually have their temperature taken by mouth. Be aware that a young child may not be able to hold a thermometer in his mouth for a long time until they are around 5 or 6 years old. Place the thermometer under the side of the tongue. Ensure that your lips are firmly close around the thermometer, but do not bite it. Once the thermometer indicates that it has taken its reading, remove the thermometer and read it.

Top tips

  • It can be helpful to ask a child to hum to ensure they keep their mouth closed whilst the thermometer takes their temperature
  • Remember that cold and hot drinks or chewing gum can change oral temperature, so avoid all of these factors before having your temperature taken to ensure an accurate reading

By underarm

It is recommended to use a thermometer in the armpit with children under the age of 5. Hold them comfortably on your knee and put the thermometer in their armpit. Gently, but firmly, hold their arm against their body to ensure the thermometer stays in place. The display on the thermometer will then give a reading of the temperature.

Brand Information
Brand Name
Chemist 4 U
Product Data

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Shipping Times

MethodHandling TimeTransit TimeTimescaleApprox Cost
Standard Shipping (3-5 Working Days)123£2.95
Royal Mail Tracked 24011£4.95

Times are given in working days and are approximate. Costs may change based on order total, day of the week or location within the UK. Ability to hit timescales will depend on whether the products are ordered before a cut off time, as well as additional administration time incurred in reviewing your order.

Please review the estimates at the checkout.

Shipping Costs

Free UK Delivery on all orders over £30* - Delivery within 3-5 working days.

Standard UK Delivery - £2.95* - Delivery within 3-5 working days.

Express UK Delivery - £4.95** - Delivery within 1-2 working days.

Temperature Controlled Delivery - £8.85 - Delivery within 1-3 working days.

Please Note: These prices are shown as a guide only. All delivery times are approximate but have been obtained in good faith.

*Excluding refrigerated products and treatments which are subject to different postage charges.


Discreet Delivery

All our items are sent completely discreet for your peace of mind.

This means the packaging is plain, there is no mention of what product is inside your package and there is no mention of Chemist4U either.

We respect that many of our products are of a sensitive nature - this is why we take every step to keep your purchases private.

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Clinical Digital Oral Thermometer Reviews

customer art benis,
works on arrival. but does not make the required sound when reading is complete.
Evelyn Domeyer,
Works as it should, pleased with product and price
Robin Sullivan,
All as expected
Linda Stewart,
It works as expected
Great little product - does what it says on the tin!