Skip to product information
1 of 1

  • Images are for illustration purposes only

Omron G/TEMP 520 Thermometer

Omron G/TEMP 520 Thermometer

  • 1. Ozempic®️-equivalent therapy now available for weight management
  • 2. Average weight loss of 17%, with 1 in 3 patients achieving over 20%
  • 3. May help reduce osteoarthritis-related pain
  • 4. Wegovy®️ is not expected to impact the effectiveness of oral contraceptives
  • 5. Supports cardiovascular risk reduction
  • 6. Over 22 million patients treated with semaglutide-based therapies since 2018

  • ✔️ Detects fever in approximately one second with non-contact infrared technology
  • ✔️ Suitable for adults, children, and babies from birth
  • ✔️ Colour-coded alert system identifies normal, elevated, and high temperatures
  • ✔️ Hygienic shared-use design — no skin contact required between users
  • ✔️ CE-marked medical device validated for accurate home temperature monitoring

Price Checker

Regular price £40.78
Sale price £40.78
Sale Sold out
  • Lowest price guarantee
  • Includes FREE private prescription
View full details

 

What Is a Digital Thermometer for Adults?

 

Knowing whether you or someone in your household has a fever is one of the most immediate things you need to find out when illness strikes. The Omron G/TEMP 520 is a non-contact infrared forehead thermometer designed to give you a fast, reliable temperature reading without any fuss. Whether you're checking on a restless toddler at 2am or monitoring your own temperature during a bout of flu, having a dependable device at home genuinely matters. You can find it alongside other electrical health and diagnostic devices at Cured Pharmacy.

The NHS defines a high temperature as 38°C or above. Spotting that threshold quickly allows you to act — whether that means rest, fluids, or seeking medical advice. The Omron G/TEMP 520 is priced at £40.78 and is available without a prescription, making it a practical addition to any home medicine cabinet.

 

How Does the Omron G/TEMP 520 Work?

 

The device uses infrared sensor technology to detect the thermal energy naturally emitted from the skin surface of the forehead. It doesn't need to touch the skin at all — which is particularly useful when measuring temperature in sleeping children or anyone who finds contact thermometers uncomfortable. Here's how the measurement process works:

  • The infrared sensor detects heat radiating from the temporal artery region of the forehead.
  • The device converts this infrared energy into a temperature reading using an internal algorithm.
  • The result appears on the digital display within seconds.
  • A colour-coded alert system helps you interpret the reading at a glance — typically green for normal, orange for slightly elevated, and red for high temperature.

Non-contact infrared thermometers like this one are widely used in clinical and home settings because they reduce the risk of cross-contamination between users.

 

Who Should Use the Omron G/TEMP 520?

 

This thermometer is suitable for a wide range of users. It's particularly well-suited to families with young children, older adults who may find other thermometer types difficult to use, and anyone who wants a hygienic, no-contact option for regular temperature monitoring. If you're managing a condition that requires close health monitoring — such as an infection or post-operative recovery — having a reliable thermometer at home is especially important.

  • Adults monitoring their own temperature during illness
  • Parents checking temperature in babies, toddlers, and older children
  • Carers monitoring temperature in elderly or vulnerable individuals
  • Anyone who wants a hygienic, shared-use thermometer for the whole household

 

How Does the Omron G/TEMP 520 Compare to Other Thermometers?

 

Feature Omron G/TEMP 520 Standard Digital Oral Thermometer
Measurement method Non-contact infrared (forehead) Contact (oral/axillary)
Speed of reading Approximately 1 second 60–90 seconds
Suitable for sleeping children Yes No
Hygiene between users High — no skin contact required Requires cleaning between uses

 

Is the Omron G/TEMP 520 Clinically Suitable for Home Use?

 

Yes. The digital thermometer for adults and children in the Omron G/TEMP 520 range is designed to meet the demands of everyday home health monitoring. It is a CE-marked medical device, which means it has been assessed for safety and performance in line with European medical device regulations applicable in the UK. That said, it is not a substitute for professional clinical assessment. If a fever is persistent, very high (above 39.5°C), or accompanied by other worrying symptoms such as difficulty breathing, a rash, or confusion, you should seek medical advice promptly.

If you're also managing cold or flu symptoms alongside a fever, you might find it helpful to browse our cold and flu range for supportive treatments. Always speak to your pharmacist or GP if you are unsure whether a temperature reading requires further investigation.

This product is a medical device. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Omron G/TEMP 520 Thermometer specifications
Treatment category Temperature monitoring / fever detection
Mechanism of action Infrared sensor detects thermal energy from the forehead
Effective for Measuring body temperature in adults and children
Suitable for Adults, children, babies (non-contact use)
Active ingredient N/A — medical device
UK classification CE-marked medical device
Preparation Electronic infrared thermometer
Route of administration Non-contact forehead measurement

Specifications of Omron G/TEMP 520 Thermometer

 

What Is the Omron G/TEMP 520 and What Is It Used For?

 

The Omron G/TEMP 520 is a non-contact infrared forehead thermometer intended for measuring body temperature in adults, children, and babies. It is used at home to detect fever — defined by the NHS as a temperature of 38°C or above — and to monitor temperature changes during illness. It is a medical device, not a medicine, and does not treat fever itself. Rather, it helps you make informed decisions about whether to seek further care or manage symptoms at home.

Fever is a common response to infection. The NHS notes that most fevers in adults and children resolve on their own with rest and adequate fluid intake. However, monitoring temperature accurately is important, particularly in young children, older adults, and those with underlying health conditions. If you're looking for supportive treatments alongside temperature monitoring, our pain relief range includes options such as paracetamol and ibuprofen that can help manage fever symptoms.

 

What Do You Need to Know Before Using the Omron G/TEMP 520?

 

Before using this thermometer, there are a few important points to be aware of. It is a medical device and should be used in accordance with the manufacturer's instructions to ensure accurate readings.

Contraindications and warnings:

  • Do not use on a forehead that is wet, sweaty, or has recently been exposed to extreme heat or cold — this can affect accuracy.
  • Allow the device to acclimatise to room temperature for at least 30 minutes if it has been stored in a very cold or hot environment.
  • Do not use as a sole diagnostic tool — always seek medical advice if you are concerned about a temperature reading.
  • Not intended to replace clinical thermometry in a hospital or GP setting.
  • If the device is dropped or damaged, do not use it until it has been checked for accuracy.

Known interactions:

  • No drug interactions — this is a medical device, not a medicine.
  • Readings may be affected by environmental factors such as draughts, direct sunlight, or air conditioning near the measurement site.

 

How Should You Use the Omron G/TEMP 520?

 

Using the thermometer correctly is essential for getting an accurate reading. Follow these steps each time you take a measurement:

  1. Ensure the forehead is clean, dry, and free from hair, sweat, or cosmetics.
  2. Turn on the device by pressing the measurement button.
  3. Hold the thermometer 1–3 cm from the centre of the forehead, between the eyebrows.
  4. Press the measurement button and keep the device still until the reading appears.
  5. Note the temperature displayed and the colour-coded alert (green, orange, or red).
  6. If the reading seems unexpectedly high or low, wait 30 seconds and repeat the measurement.
  7. Clean the sensor area with a dry, soft cloth after each use.
Indication Age Group Normal Range Action if Above Range
Routine monitoring Adults 36.1°C – 37.2°C Seek advice if ≥38°C persists
Fever detection Children (3 months+) 36.4°C – 37.4°C Contact GP if ≥38°C in young children
Fever detection Babies under 3 months 36.4°C – 37.4°C Seek urgent medical advice if ≥38°C

 

What Are the Possible Side Effects of the Omron G/TEMP 520?

 

As a non-contact medical device, the Omron G/TEMP 520 does not introduce any substances into the body and therefore has no pharmacological side effects. However, there are a small number of device-related considerations to be aware of.

Common considerations:

  • Inaccurate readings if the forehead is wet or the device is used outside the recommended distance
  • Error codes displayed if the device is used in extreme ambient temperatures
  • Battery depletion over time, which may affect display brightness and accuracy

Less common considerations:

  • Sensor drift over extended periods of use — periodic calibration checks are advisable
  • Display malfunction if the device is dropped or exposed to moisture

If you notice consistently unusual readings, stop using the device and contact the manufacturer or your pharmacist for guidance.

 

How Should You Store the Omron G/TEMP 520?

 

Correct storage helps maintain the accuracy and longevity of the device. Follow these storage guidelines:

  • Store at room temperature (15°C–35°C), away from direct sunlight and sources of heat.
  • Keep away from moisture and do not store in a bathroom or near a sink.
  • Store in the protective case provided to prevent damage to the infrared sensor.
  • Remove batteries if the device will not be used for an extended period.
  • Keep out of reach of children when not in use.
  • Do not store near strong electromagnetic fields, which may affect sensor performance.

If you're building a home health kit, you might also want to explore our first aid range for other essential items to keep alongside your thermometer.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy the Omron G/TEMP 520 thermometer online in the UK?

You can buy the Omron G/TEMP 520 directly from Cured Pharmacy online at £40.78, with no prescription required. It is a medical device available over the counter and can be ordered conveniently from our electrical health and diagnostic collection. Simply add it to your basket and choose your preferred delivery option at checkout.

How does the Omron G/TEMP 520 measure body temperature?

The Omron G/TEMP 520 uses an infrared sensor to detect the thermal energy naturally emitted from the skin surface of the forehead, specifically from the area overlying the temporal artery. This infrared energy is converted into a temperature reading by an internal algorithm and displayed on screen within approximately one second. No physical contact with the skin is required, making it hygienic and comfortable for repeated use.

How do I use the Omron G/TEMP 520 step by step?

Ensure the forehead is clean and dry, then hold the device 1–3 cm from the centre of the forehead and press the measurement button. Keep the device still until the reading appears on the display — this usually takes about one second. If the reading seems unusual, wait 30 seconds and repeat the measurement to confirm.

What is a normal temperature reading on the Omron G/TEMP 520?

A normal adult body temperature typically falls between 36.1°C and 37.2°C, though there is natural variation between individuals and throughout the day. The NHS advises that a temperature of 38°C or above is considered a high temperature or fever. If you or someone you are caring for has a temperature at or above this threshold, monitor closely and seek medical advice if it persists or is accompanied by other symptoms.

Is the Omron G/TEMP 520 suitable for babies and young children?

Yes, the non-contact design makes the Omron G/TEMP 520 particularly well-suited to use in babies and young children, as it avoids the discomfort of oral or rectal thermometers and can even be used on a sleeping child. The NHS recommends seeking urgent medical advice if a baby under three months has a temperature of 38°C or above. Always follow the manufacturer's guidance and consult your GP or health visitor if you are concerned about a child's temperature.

How accurate is the Omron G/TEMP 520 compared to other thermometers?

The Omron G/TEMP 520 is a CE-marked medical device designed to meet accuracy standards for clinical use at home. Accuracy can be affected by environmental factors such as draughts, direct sunlight, sweat on the forehead, or using the device outside the recommended 1–3 cm distance. For the most reliable reading, always follow the instructions carefully and repeat the measurement if the result seems inconsistent.

What should I do if the Omron G/TEMP 520 shows an error code?

If an error code appears on the display, first check that the forehead is clean and dry and that you are holding the device within the correct 1–3 cm distance. Allow the device to rest at room temperature for at least 30 minutes if it has recently been in a very cold or warm environment, then try again. If error codes persist, consult the user manual or contact the manufacturer for support.

Who is eligible to use the Omron G/TEMP 520?

The Omron G/TEMP 520 is suitable for use in adults, children, and babies and does not require a prescription. It is particularly useful for families, carers of elderly individuals, and anyone who needs a hygienic, shared-use thermometer at home. There are no specific medical contraindications to using this device, though it should not replace professional clinical assessment when symptoms are severe or persistent.

What are the alternatives to the Omron G/TEMP 520?

Alternatives include standard digital oral thermometers, tympanic (ear) thermometers, and axillary (underarm) thermometers — each with different levels of accuracy and suitability depending on the user's age and circumstances. The Omron G/TEMP 520 offers the advantage of non-contact measurement, which is faster and more hygienic than contact-based alternatives. You can browse other options in our electrical health and diagnostic collection to compare devices.

Can I use the Omron G/TEMP 520 to monitor temperature during COVID-19 or other infections?

Yes, the Omron G/TEMP 520 can be used to monitor temperature during any illness where fever is a concern, including respiratory infections. The NHS lists a high temperature as one of the key symptoms to monitor during illness. However, temperature monitoring alone is not sufficient for diagnosis — always follow current NHS guidance and seek medical advice if you are concerned about your symptoms.

How long do the batteries last in the Omron G/TEMP 520?

Battery life will vary depending on frequency of use, but the device is designed for efficient power consumption to maximise battery longevity. If the display becomes dim or readings become inconsistent, this may indicate that the batteries need replacing. Always use the battery type specified in the manufacturer's instructions and remove batteries if the device will not be used for an extended period.

How should I clean the Omron G/TEMP 520 between uses?

Wipe the sensor area and the body of the device with a dry, soft cloth after each use to remove any dust or residue. Do not use water, alcohol, or chemical cleaning agents directly on the sensor, as this may damage the infrared lens and affect accuracy. If the device is being shared between multiple users, clean the sensor area carefully before each use to maintain hygiene.

How should I store the Omron G/TEMP 520 thermometer?

Store the Omron G/TEMP 520 at room temperature (15°C–35°C), away from direct sunlight, moisture, and sources of heat or cold. Keep it in its protective case when not in use to prevent damage to the infrared sensor. Remove the batteries if you do not plan to use the device for several weeks or months.

Can the Omron G/TEMP 520 be used alongside fever-reducing medicines?

Yes, using the thermometer alongside fever-reducing medicines such as paracetamol or ibuprofen is a sensible approach to managing fever at home, as it allows you to track whether the medication is bringing the temperature down effectively. The NHS recommends monitoring temperature regularly when managing a fever with medication. If you need fever-reducing medicines, you can browse our pain relief range for suitable options.

What are the latest guidelines on managing fever at home in the UK?

Current NHS guidance recommends keeping the person comfortable, ensuring they drink plenty of fluids, and using paracetamol or ibuprofen if needed to reduce discomfort. You should seek urgent medical advice if a baby under three months has a temperature of 38°C or above, if a child has a temperature above 39°C, or if a fever in an adult persists for more than five days or is accompanied by serious symptoms such as difficulty breathing or a rash. Regular temperature monitoring with a reliable device like the Omron G/TEMP 520 helps you track changes and make informed decisions about when to seek help.

How Should You Use the Omron G/TEMP 520?

Using the Omron G/TEMP 520 correctly is straightforward, but following each step carefully ensures you get the most accurate reading possible. Before you begin, make sure the forehead is clean, dry, and free from sweat, hair, or any cosmetic products.

What Is the Correct Dose of the Omron G/TEMP 520?

As a medical device rather than a medicine, the Omron G/TEMP 520 does not have a "dose" in the pharmacological sense. However, the table below outlines the normal temperature ranges and recommended actions for different age groups, based on NHS guidance.

When Is the Best Time to Use the Omron G/TEMP 520?

You can use the thermometer at any time, but for the most accurate results, avoid measuring temperature immediately after physical activity, a hot bath, or eating and drinking, as these can temporarily raise skin surface temperature. It is also advisable to allow the person being measured to rest quietly for at least five minutes before taking a reading. During illness, measuring temperature at regular intervals — such as every four to six hours — gives you a clearer picture of how a fever is progressing or responding to treatment.

How Long Can You Use the Omron G/TEMP 520 For?

The Omron G/TEMP 520 is designed for long-term home use and does not have a fixed expiry date in the way that medicines do. With proper care and storage, the device should remain accurate and functional for several years. It is good practice to periodically check the device's accuracy by comparing readings with a known-accurate thermometer, and to replace the batteries as needed to maintain reliable performance. If you notice persistent inaccuracies or display issues, contact the manufacturer for guidance.

Do not exceed the recommended measurement frequency during a single session. If in doubt, speak to your pharmacist.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

What Are the Most Common Considerations When Using the Omron G/TEMP 520?

The Omron G/TEMP 520 is a non-contact medical device and does not introduce any substance into the body, so it carries no pharmacological side effects. That said, there are some common practical issues that can arise with use, most of which are easily avoided by following the instructions carefully.

  • Inaccurate temperature readings due to a wet or sweaty forehead
  • Readings outside the expected range if the device is held too far from or too close to the forehead
  • Error codes appearing if the device is used in very cold or very warm ambient conditions
  • Dim display or inconsistent readings when batteries are running low

What Are the Less Common Issues Associated With the Omron G/TEMP 520?

Less frequently, users may encounter issues related to the device's long-term performance rather than individual measurements. These are generally related to storage or handling rather than any inherent fault with the thermometer.

  • Sensor drift after extended periods of use, leading to slightly less accurate readings over time
  • Display malfunction if the device has been dropped or exposed to moisture
  • Inconsistent readings if the device is used near strong electromagnetic fields

What Are the Serious Concerns With the Omron G/TEMP 520?

There are no serious clinical side effects associated with using this device. However, the most significant risk is over-reliance on a single temperature reading without seeking appropriate medical advice. A thermometer is a monitoring tool, not a diagnostic instrument. If a reading indicates a high fever — particularly in a baby under three months, a young child, or a vulnerable adult — you should seek medical advice promptly rather than relying solely on home monitoring. The NHS advises calling 999 or going to A&E if a person has a very high temperature alongside symptoms such as difficulty breathing, a rash that does not fade under pressure, or confusion.

What Should You Do If You Experience Problems With the Omron G/TEMP 520?

If the device consistently gives readings that seem inaccurate or displays persistent error codes, stop using it and consult the user manual for troubleshooting guidance. You can also contact the manufacturer's customer support team or speak to your pharmacist, who can advise on whether the device needs to be replaced. Never attempt to repair or open the device yourself, as this may damage the sensor and void any warranty.

Can the Omron G/TEMP 520 Interact With Other Devices or Medicines?

As a non-contact infrared thermometer, the Omron G/TEMP 520 has no known interactions with medicines. However, readings may be affected by the use of certain topical products on the forehead — such as cooling gels or medicated creams — which can alter the skin surface temperature detected by the sensor. If you have applied any product to the forehead, clean the area thoroughly and allow the skin to return to its natural temperature before taking a measurement. Strong electromagnetic fields from other electronic devices may also occasionally interfere with the display.

If you are concerned about any issues with this device, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

We’re a safe and
regulated UK service

Registered Pharmacy Badge

Lowest Price Guarantee

We're convinced you won't find your treatment cheaper, but if you do we'll refund the difference.

Find out more

100% discreet packaging

We're convinced you won't find your treatment cheaper, but if you do we'll refund the difference.

Find out more

Agent

Need help?
Talk to our friendly experts now

How our service works

Service Setup

Service setup

Discreet Packaging

Discreet packaging

Express Delivery

Express delivery