Design and ergonomics
A family thermometer
All in curves, the Thomson Thermo D2 dares a little color to move away from the rather cold aspect of most medical devices which are often satisfied with shades of white and gray. However, this is a reminder that it is not a professional model, but rather a family one, especially since it seems a little less well finished than certain competing models such as the Braun PRT 2000 and the Omron Flex Temp Smart.
The flexible tip of the Thomson Thermo D2
Nothing to worry about however, even if we would have liked it to be waterproof (IP22 only) to simplify its maintenance. Failing this, the tip should be cleaned with a mild soap or a cotton ball soaked in 70% alcohol. Be careful not to pass the thermometer under water, since the hatch of its battery is not equipped with a seal.
A battery providing up to 5000 measurements, according to the manufacturer
Up and running in 3 seconds
The operation of the Thermo D2 is not complicated. Just turn it on by pressing its single button – unfortunately not the best placed to be operated with one hand – then wait 2 seconds for it to initialize. The last measured temperature is then displayed for a large second. All that remains is to position the thermometer in the rectum, in the sublingual cavity or in the armpit. Once the temperature has been measured, the Thermo D2 emits a series of beeps and displays the result on its screen.
The leaflet format of the manual is not the most practical, but the explanations are complete.
A fever that quickly turns red
The screen backlighting changes color depending on the level in which the measured temperature is located: green between 32°C and 37.1°C; yellow between 37.2°C and 37.5°C; red between 37.6°C and 43.9°C. Convenient to know at a glance if you have a fever. In addition, the thermometer signals a fever by a succession of rapid beeps when the temperature exceeds 37.5°C.
Green screen, everything is fine
The Thermo D2 does not adapt its assessment of the level of fever according to the age of the person, but by indicating a high fever with a red color from 37.6°C, it does not take the risk of under- to estimate.
Accuracy and speed
Ready in just 3 seconds after pressing its ignition button, the Thomson Thermo D2 does not take long to measure the temperature either. It only takes about 12 seconds in rectal or oral grip. In axillary grip, the measurement only takes a few extra seconds, but the manufacturer recommends waiting at least 20 seconds for the temperature to stabilize. It is indeed a minimum, the temperature under the armpit being less stable than the rectal or oral temperature.
Given its good speed, the Thermo D2 can easily take several successive measurements if you want to ensure the reliability of a temperature. During our tests, however, it showed good repeatability of its measurements (90%) in rectal grip. We can therefore rely on the results displayed, which vary very little.
The temperature curve of the Thomson Thermo D2 compared to that of our reference rectal thermometer
The accuracy is also satisfactory compared to our reference thermometer, with an average deviation of only 0.15°C, even though the manufacturer announces an accuracy of +/-0.3°C.
The temperature differences measured in relation to our reference thermometer
