Comparison Dr. Frei T-20 vs Dr. Frei T-30
Add to comparison | ![]() | ![]() |
|---|---|---|
| Dr. Frei T-20 | Dr. Frei T-30 | |
from $6.28 up to $6.84 | from $8.64 up to $10.64 | |
| User reviews | ||
| TOP sellers | ||
Fast and accurate temperature measurement. Flexible tip. Sound alerts. | ||
| Type | contact | contact |
| Application area | axillary oral rectal | axillary oral rectal |
| Design for children | ||
Measurements | ||
| Measurement duration | 10 с | 10 с |
| Measurement range | 32-43 °C | 32-43 °C |
| Measurement accuracy | 0.1 °C | 0.1 °C |
General | ||
| Reading memory | 1 pcs | 1 pcs |
| Sound signal | ||
| Waterproof case | ||
| Flexible tip | ||
| Power source | 1хLR41 | |
| Color | ||
| Added to E-Catalog | february 2016 | february 2016 |
Compare Dr. Frei T-20 and T-30
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Glossary
Design for children
Design that alleviates anxiety: soft lines without sharp edges, warm pastel colors, familiar images of animals and characters, large friendly icons on the screen, and gentle backlighting instead of harsh glare. Unlike "adult" models with strict bodies, children's versions often feature non-slip inserts, unmarked matte textures, and interchangeable decorative caps, utilizing skin-safe materials and paints resistant to disinfection. This design turns measurement into a game: the child chooses a "little bear" or "dinosaur," a smiling emoji on the display confirms a successful measurement, and the gentle indicator doesn't wake them at night. In practice, this helps to quickly obtain an accurate reading because the child is not resistant and holds the thermometer calmly.
Power source
Type of batteries used in thermometers.
— AA. The ubiquitous battery, commonly found everywhere batteries are sold, operates at 1.5 volts, making it widely accessible.
— AAA. The batteries, which are a compact alternative to AA batteries with the same 1.5V voltage, are widely used and suitable for small devices.
— CR2032. One of the most popular types of batteries, with a diameter of 20 mm and a thickness of 3.2 mm. Actual for use in compact devices.
— AA. The ubiquitous battery, commonly found everywhere batteries are sold, operates at 1.5 volts, making it widely accessible.
— AAA. The batteries, which are a compact alternative to AA batteries with the same 1.5V voltage, are widely used and suitable for small devices.
— CR2032. One of the most popular types of batteries, with a diameter of 20 mm and a thickness of 3.2 mm. Actual for use in compact devices.


