!!! Measures unfortunately much too vague

Have had a Ohrtermometer of Aldi. This struck me as terribly as the temperature was displayed very inaccurate. Therefore, I have now decided on this thermometer, as it has done very well in some tests. But after a few months of use is now clear disillusionment occurred. The right temperature is to determine hit or miss. The first measurement is always wrong anyway - and from measurement to measurement, the thermometer nourishes slowly to the proper temperature. The best example there was only today again: our little boy has to date unfortunately again a fever - so we have just before going to bed measured. The first measurement was 37.4 degrees, the second 38.2, the third 38.6 and fourth measurement finally 38.8 degrees. Since then I feel a bit ripped off before! Unfortunately, I can only advise!