Comparison Dr. Frei T-20 vs Dr. Frei T-30

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	Dr. Frei T-20	Dr. Frei T-30
	from $6.28 up to $6.84 Outdated Product	from $8.64 up to $10.64 Outdated Product
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Main		Fast and accurate temperature measurement. Flexible tip. Sound alerts.
Type	contact	contact
Application area	axillary oral rectal	axillary oral rectal
Measurements
Measurement duration	10 sec	10 sec
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
Added to E-Catalog	february 2016	february 2016

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.