iProven Oral Thermometer, Measures in 10 Seconds with Flexible tip and Fever Alarm, Digital Medical Thermometer for Adults, Kids and Toddlers - DTR-1221A

I bought this as it came up after my search for “under arm thermometer” and it looks exactly as my old one did so I assumed (wrongly) as I was in a rush to get one and didn’t read all the description. Tried it under arm anyway, not great.. but! It does work orally so really it’s a good value thermometer for the intended use but be careful those who search for under arm, it’s not stated on the packaging or description. I have since read a similar review too so I should have looked more closely and read it all before purchasing. My error but a great item for oral (and probably rectal but I’m not trying that one haha!).

Cannot really rate accuracy cos how would you know? Cannot rate fever alarm unless I have a fever. Why does it have redundant fahrenheit measurement? Makes a beep sound when it has a steady reading which is barely audible. Apart from that it is all good. Stick under tongue for 5 seconds, breathe through nose and hey presto! Or stick in the other end but not in armpit.

Not a backlight display so can be difficult to read.

Perfect for purpose thank you

East to use and read,happy with the purchase…have recommended it to other people..

Takes longer to read when baby has fever. Also not easy to keep it in baby’s mouth for 10 sec.I bought it by mistake, thought it was under arm thermometer.

Brilliant. Excellent quality and affordable

I bought two digital medical thermometers to update my 'old faithful' digital that I have used for many years with consistent results. This one ('Best' digital) measures 0.1 deg higher than my old faithful', and It settles very quickly (about 10 secs). The other one I bought -the 'TTC Basal Body Temp' digital thermometer takes about a minute to settle and reads to a hundredth of a degree but reads 0.3 deg lower than the 'Best'. Both give reasonably repeatable results and tests I have done indicate that differences in readings are down to absolute accuracy and not failure to settle (repeat checks in quick succession in a water bath are similar).So with readings differing by 0.3 deg where does the truth lie? To find out I checked them against the best reference thermometers I could find. 0.3 deg uncertainty is just about tolerable if you are testing for a fever, but if, like me, you are interested in accurate readings as an indication of possible hypothyroidism then it isn't good enough.I checked these thermometers by immersion in a washing-up bowl of warm water, with two thermometers close together, observing as the water slowly cooled while gently stirring (the water cools quite slowly and needs very little stirring to ensure no temperature gradient.) As my reference I used two identical Paterson photographic thermometers, one I have had for about thirty years and the other just purchased on Amazon for about £20. These are supposedly 'certified' to an accuracy of +-0.14C and turn out to agree within 0.1deg at 20C but differ by 0.3deg at 37C, which is slightly disconcerting.The TTC 'Body Basal Thermometer' has high resolution with readings to a hundredth of a degree, but reads -0.6 at 37C compared to my old Paterson, and -0.3 compared to the new Paterson. The 'Best' Digital Medical Thermometer reads -0.3 at 37C compared to my old Paterson, or correct according to the new Paterson.Without an even better reference I can therefore only conclude that the 'Basal' thermometer is probably reading between 0.3 and 0.6deg low - not good enough for accurate testimg, though if you do what I did and calibrate either of these thermometers against a Paterson, noting the correction to apply, you will probably get within about +-0.2deg accuracy. I cannot find a better way - truly accurate and certified medical thermometers don't seem to exist!