Omron TH839S

This product is a piece of junk – This product is a piece of junk it doesn’t work no matter how many times you reset and still doesn’t do anything waste of money don’t even get this not worth the price they ask for Show details

The worst ever! – Have used all sorts of thermometers from manual to basic digital and beyond - from the most simple to use to the most complex - for 40 years. This did not work once. Not one reading. Just useless beeps. This should not be on sale anywhere. Show details

Useless – The original battery died after two uses despite registering that the thermometer was off. Then the replacement battery CR2032 - the correct one - wouldn't lock in. And now it is useless. Show details

What a joke!!! Don't ever buy this!! – When you need it most when the kids are sick this stuffed us around so much with low on display and totally inaccurate reading. Worked good for the first 2 months. Returned it and got exchanged for another and same thing 3 months later. Wish I could give it 0 stars for the headache created. Show details

Please stop selling this dangerous product – Unable to speak to anyone from omron to get a refund on this awful product. Readings always to low. Now stopped working altogether! Update : since writing this review I have been sent a replacement which works perfectly well.

worst ever – worst thermometer I have ever come across. inaccurate. battery goes flat with next to no use. it is junk. i purchased it hoping to get accurate readings in my family daycare but its an expensive failure.

Piece of junk – Very inaccurate and omron made it difficult to return. As others have said it should be pulled from the market. Chemist warehouse had to go to a lot of trouble to authorise a refund  Show details

Should not be on the market – This is the most inaccurate reading for a thermometer I have ever used. Always reads no fever in the 35 range when there is a high fever. Can not be trusted and should not be sold. Useless. Waste of money. Don't use it. Show details

Worst thermometer ever! – It’s never made an accurate reading and so unsafe if you have little ones. Everytime my child has had a fever, this thermometer shows readings in the 35 range. After a few goes, the beep functionality stopped. Just rubbish. Wish I read reviews befor buying but who would think that you would need to with a thermometer- it has one job to do....take the right temperature! I changed batteries, bought new ear replacements. Just rubbish!  Show details

Worst thermometer ever – Purchased 4 weeks ago and it's not accurate with temperatures, I even changed the battery and it didn't help, my son had a fever of 38.5° and ended up in hospital and this thermometer kept reading 35.5° Do not waste your money on this crap you can pick up way better thermometers for a quarter of the price Show details

Good while it lasted – The first couple of times we didn't have a problem with it. Recently, my son's body has been warm so I check his temp and it came up as 36c and at times lower. Yesterday we check his temp again before leaving to the doc and it was reading 36.9 and when the doc check (less than 5 mins) the doctor's thermometer was reading 39.9.. so all this time my… Read more

son's was having high temperature but the thermometer wasn't reading it well.. please do yourself a favour and don't buy this brand.

Spend more get better – No 2 temps the same, error messages, I don't trust for my 3 children in this day and age. Have had superior in the past, going to try an infrared forehead monitor.

Nearly gave me a heart attack – Kept saying 34.5 or 35 called the ambulance they confirmed it's the Therometer he has a reading of 36 I was soo confused because he was sweating with that reading.This should not be sold soo wrong gave me a heart attack and started crying thinking something is wrong with my little one Show details

no troubles with this product! – I didn't have a problem with this product, I read the instructions very carefully and used it exactly how the little pamphlet instructet me to use this item and the readings were accurate. I would definatly recoment reading all the instructions and following them carefully for accurate readings. Show details

Terribly inaccurate – We bought this thermometer a couple of years ago for our baby. Ever since it has never given an accurate reading for our baby, toddler or adults. Reading is consistently low (35 degrees) and never the same. The product was expensive and in my opinion not worth the money. If I'd kept the receipt I would have exchanged it when I had a chance. Show details

It is never accurate!!! – Bought in March.... never accurate from purchase date... couldn't get one I wanted due to no availability.... taken batteries out reset etc..... my digital $20 one much more accurate and consistent paid $150 Now have a Braun one which like digital one more accurate and consistent Show details

Should be zero stars – If I could give this zero stars I would. Surely this is dangerous? This thermometer never gives accurate readings and range from below 35 degree to fever status in several checks. I've followed the instructions closely but never get the same reading twice and always within 1.5 - 2 degrees difference. Total dud!

Awful, avoid – My toddler had a temperature, we’d just been to the doctor who confirmed this. Bought the Omron temperature measuring device straight after. It consistently read “35.3.” Returned and refunded it. Show details

Nearly gave me a heart attack- reading was off so much – I have a 4 month old. It was 2 degrees off being accurate. I can’t actually believe it is allowed to be sold. It said my baby was 35.2 when he was 37.2. I am still trying to get my heart rate down from the false reading. Show details

Save your money and buy anything else – This product should not be allowed to be sold as a thermometer. This is completely inaccurate giving false high and low temperatures. Dangerous as parents or carers could miss significant signs that could be the difference of early medical intervention. Show details

Dont bother – So inaccurate. Most the time it doesnt work, contacted the company & they dont care. Will be requesting a refund, no replacement so I can actually get a better more reliable brand. Show details

poor design, waste of money and dangerous to use – this is garbage, the head is solid plastic and requires to put into ear to measure. it takes very long to get result, and the display is on the other side of the device which you can't see what is happening if you are applying it to a baby. our baby was very uncomfortable when using this and can't settle still, and we were risking injury her ear… Read more

while using this. in addtion, due to the poor design, i don't even know if the device is working because the display is facing down wards instead of us. we throw this away right after using it and switched back to a more tradition design. totally waste of money and risking hurting your baby.

Consist Inaccurate Readings – This thermometer gives very low readings that cannot possibly be correct. It worked well for a few readings, after that it will not read higher than 35 degrees. Apart from being inaccurate, this product is expensive to use as it requires you to purchase the clear sleeves. I do not recommend this product at all, it is a waste of money Show details

Do NOT purchase! – Dangerous product! Read a temp of 37.5 and paramedics read 39.5 which explained a high heart rate. Wasted paramedics time because of an inaccurate reading. Temp readings consistently reading low (35 degrees) and never the same, often 2 degrees out between tests. This product will cost a life. It should be banned! Show details

Always gives low readings – If I had the receipt I would take it back! Consistently gives low readings - body temperature almostly always reads in the 34s and 35s. Bought it for our newborn but it's totally useless. Called up to complain and they asked us to send it in for testing. They said it tested with +/- 0.4 degrees Celsius accuracy but sent us a replacement because their standard is within +/- 0.2 degrees. The replacement one is the same old crap. Show details

Completely inaccurate every time! – This thermometer will never give an accurate reading. It fluctuates between 5 degrees sometimes. This should be banned as it may prevent someone from acting upon a high temperature and could cost a life. Show details

Useless – 5Temperature varies too much and too many error readings. Would not recommend this at all. Can't believe that Chemist Warehouse stocks such a terrible product. Not ecen worth $1 rrp. Show details

Inconsistent & broke after 2 years – From the first day I received it as a gift, it didn't measure the temperature half of the time, it just beeped and gave an error message regardless how I positioned it. After 2 years, it will only give an error everytime I used it. This is a useless product.

The worst thermometer – Not accurate at all. With fever at 38. Show me 34.5. Try again 35.4 and again. I'm fuming. Wast my money and now have to buy another one. Went back to the chemist in less then 24h They refuse to help and i been told is nothing wrong. Don't buy if you want to be safe.

Inaccurate and unreliable – Never get the same reading twice. Child can have fevers of 38 under arm and this thermometer will read 35 or no temp at all (will only display Lo). My sister had the same one and when she sent it back under warranty they said there was nothing wrong with it and sent it back to her.

Wildly inaccurate – Pretty much what everyone else here is saying - totally unreliable product. For example this morning I did 6 measurements and got 6 different results, ranging from 34.3 to 35.8. I could not recommend purchasing this product to anyone for any purpose, particularly if you have a sick child and need accuracy. They should not be selling this product.

Don’t buy this – Don’t ever buy this thermometer. Never got a correct result. Very hard to get a reading. Return policy is very bad. Once you buy this, that’s it. This is like buying a piece of expensive plastic. This product is a scam. Don’t know how they are still in market. Chemist warehouse should stop selling them ASAP.

Absolutely USELESS – This is the WORST money I have spent on a product. I cannot believe how useless it is. What an absolute joke! My 2 1/2 year old daughter has had a fever and the temp jumps from 35.6 to 39. I want my money back!! This is SUCH a dangerous product that should be recalled. Furious.

Zero stars – It was good till I changed battery. It only shows low temperature 35 when actually it is 39 or above!! Wasted my 60$

DO NOT USE THIS PRODUCT!!! – This product will not decect a fever. Do not buy it.