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3M Digital Basal Thermometer

by BD
3.7 out of 5 stars  See all reviews (156 customer reviews)

Price: $12.10 & FREE Shipping on orders over $25. Details
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  • Oral or rectal use; lifetime guarantee
  • Fast, accurate digital thermometer for gauging waking temperature
  • Helps identify ovulation times for help with conception or contraception
  • Continual beep when used correctly; signal when done
  • 1-minute temperature readout; auto-memory displays last-recorded temp

Frequently Bought Together

3M Digital Basal Thermometer + Taking Charge of Your Fertility, 10th Anniversary Edition: The Definitive Guide to Natural Birth Control, Pregnancy Achievement, and Reproductive Health + Combo 50 (LH) Ovulation & 20 (HCG) Pregnancy Test Strips
Price for all three: $51.41

Buy the selected items together



Product Description

Product Description

Check Basal Temperature to:

  • Increase likelihood of conception.
  • Understand your fertility cycle.
  • Oral or Rectal Use.
  • Lifetime guarantee.

Accu-Beep Feature™.

  • Guarantees fast, accurate readings.
  • Beeps when placed correctly.
  • Signals when done.

Bonus:  Exclusive Temperature Charts included by Toni Weschler, MPH, Author "Taking Charge of Your Fertility."

Guaranteed Accuracy - Only the Accu-Beep™ feature guarantees fast, one-minute accurate readings.

  • Continuous beep confirms your are using the basal thermometer correctly.
  • Lets you know the thermometer is properly positioned.
  • Signals when done.
  • Clinically proven to match glass thermometer accuracy.

Added Safety

  • No glass to break.

Easy to Use

  • Auto memory shows last temperature taken
  • Fast, one-minute temperature read-out
  • Battery/storage case included
  • Automatic shut-off

Easy to Read

  • Extra large lighted display for easy reading.

Basal Body Temperature:  Basal Temperature is the normal body temperature of a healthy person immediately upon awakening in the morning.  In women, this temperature normally rises after ovulation due to hormonal changes.  Thus, a temperature increase near the middle of your menstrual cycle can indicate ovulation has occurred.

Identifying Ovulation Timing:  Tracking your basal temperature can help you to identify ovulation timing.  Temperature Tracking Charts are included to help you track your temperature for your menstrual cycles.  By taking your temperature with the B-D Basal Digital Thermometer each morning throughout your cycle, a pattern usually becomes visible.  This pattern, along with other indicators can help you determine the timing of your ovulation.  Knowledge of ovulation timing can help you increase or decrease your likelihood of conception.

Seeking Professional Guidance:  Remember that temperature fluctuations and other observations are only indicators of ovulation.  Interpretation of such information requires medical knowledge and training.  Providing your doctor with completed Temperature Tracking Charts can help in fertility diagnosis and natural family planning techniques. 

Product Description

Basal digital thermometer

Product Details

  • Item Weight: 1.8 ounces
  • Shipping Weight: 1.8 ounces (View shipping rates and policies)
  • ASIN: B0000533AY
  • UPC: 382905245602
  • Item model number: 524560
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (156 customer reviews)
  • Amazon Best Sellers Rank: #3,871 in Health & Personal Care (See Top 100 in Health & Personal Care)
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Customer Reviews

The thermometer is very accurate and works well for that purpose. Mark S. Johnson  |  16 reviewers made a similar statement
It is not that loud, but it does wake my husband up. whodjyathink  |  19 reviewers made a similar statement
Most Helpful Customer Reviews
197 of 198 people found the following review helpful
5.0 out of 5 stars PROBLEMS AND SOLUTIONS June 11, 2010
First of all, I really love this thermometer and all that it has to offer. The continuous beeps really do help to know that the thermometer is in the proper position. It normally takes me less than 30 seconds to get a reading and its great that it beeps when its done. The memory recall feature is definitely a plus, esp. when I'm still too drowsy to remember the temp, and the back light feature is equally great. I think this is one of the only thermometers with a backlight. I've been using it with success for the FAM for almost two years know. I would definitely recommend it to a friend.

I've been reading the complaints that people have and a lot of them aren't valid or easily solved. Here they are:

PROBLEM 1: This thermometer can't be used as a basal thermometer or to track fertility because it doesn't record to the 1/100th (like 97.39) of a degree.

Answer: FALSE!! Tony Weschler, states in her latest edition "Taking charge of your fertility", a groundbreaking book on the subject of the Fertility Awareness method (and in turn NFP)--just look at the reviews on it here on amazon, on page 76 "Also, it is imperative that it be accurate to within 1/10th degree F. (for example, 97.4), BUT DO NOT USE THOSE THAT MEASURE TO WITHIN 1/100TH of a degree (for example, 97.47) since the latter are unnecessary and confusing." (emphasis added)
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PROBLEM 2: The beeps are WAY too loud. They annoy me and wake up my spouse.

Answer: I personally don't find them to be too loud and neither does my husband, but if you do, on the back of the thermometer there is a small hole for the sound. When you're taking your temperature. Simply take your thumb and lay it straight down the back side of the thermometer while it is in your mouth, so that the hole is covered up. I found that this will SIGNIFICANTLY decrease the volume to a quiet, muffled, beep. You can even wrap your index finger around the top part of the thermometer (where it says BD) to give your your thumb some more resistance to press up against, muffling the sound some more.
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PROBLEM 3: The back light doesn't come on when it's done taking my temperature.

Answer: When it's done taking your temperature, press the button to turn off the thermometer. The back light will turn on again, revealing your temperature before it shuts off.
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PROBLEM 4: For the memory recall feature, the reading doesn't stay on long enough for me to be able to record the reading, and then it is erased.

Answer: When you turn the thermometer on, your last temperature will be displayed for about 4 seconds. If you turn the thermometer off again before it starts taking a new temperature (when it starts to flash), your temperature will actually still be stored on the recall feature. So when you turn it on again next time, it will still be there and continue to be there however many times you do this. Also if the 3 seconds you had before you pushed the off button weren't enough for you to see your temperature, you'll notice that you'll get an extra 5 sec's to read your temp when you press the off button before it finally shuts off.

I hope this helps!
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105 of 111 people found the following review helpful
5.0 out of 5 stars a great little tool March 11, 2005
By Tina Y
I bought this thermometer about a month ago and have been using it to take my basal body temperature every morning. I think it is a wonderful product. Although some reviews said the beep was annoying, I think it is actually a very important feature. It beeps to let you know it is placed correctly. I sure like the peace of mind when I hear that. The display is lit and very easy to read.

I can not believe that someone said she had to run into bathroom to check her temp,because she did not want to wake her husband. Come on! The beep is not loud at all. And..didn't she know that basal temp should be taken the first thing in the morning without any unnecessary movements? I think husbands should actually help wives take basal temp by inserting the thermometre into their wives' mouths. This way, we can reduce our movements to minimum! My husband does this for me everyday!

One more suggestion for those who want to keep your latest result in the thermometre's memory for more than one reviewing. Whenever you turn on the thermometre to review the result, turn it off BEFORE the display begins to flash. After it flashes, it will become blank and ready for your next test. Your last temp will not be there any more. As long as you shut it off before it flashes, your latest result will always be there till you take your basal temp next time.

By the way, 1/10 degree F is precise enough for basal temp. Non-basal temp thermometres are 2/10. 1/100 is not necessary at all since on basal temp chart, we only record like 97.6, 98.2...

Hope this helps. I like this thermometre very much. Hope you will like it too.
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56 of 61 people found the following review helpful
5.0 out of 5 stars Don't let the negative reviews fool you! January 29, 2005
I've tried the Omron (Walmart) which died after using it about a month, and also the CVS pharmacy brand (2 of them) both of which were DOA and had to replace batteries only to have them die a week later! YES, a WEEK!! I couldn't find the BD brand anywhere and had to buy it online and boy am I so glad I did! Yes it beeps. But I'm so glad it does. When I take my temp I'm usually half asleep still and with the other thermometers I never knew if it was working. I was always waiting for the finishing beep and half the time the battery was half dead so 10 minutes later the thermometer was still in my mouth! And if you know when using a BBT you shouldn't really move around, so I didn't want to take out the thermometer and check to see if it was working only to have to start all over again! It was soo annoying! But I LOVE this thermometer! It's great and it's the one that the Taking Charge of Your Fertility recommends!
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Most Recent Customer Reviews
1.0 out of 5 stars Arrived dead
I was not able to use it at all; it arrived with no battery life. Package condition was fine, but thermometer was useless.
Published 13 hours ago by Birchwood
4.0 out of 5 stars Does what it's supposed to do so it works for me!
This thermometer does what it's meant to do and the light on it is helpful since I don't usually turn the light on before taking my temp every morning. Read more
Published 6 days ago by Allison
5.0 out of 5 stars Nice product
I just bought this as we're trying to conceive. I like the beeps as it tells me it's working, would highly recommend.
Published 20 days ago by SS
4.0 out of 5 stars Good Deal
This was recommended to me for checking my temp every am before I got up to check my thyroid and it is a good deal and good price with free shipping.
Published 26 days ago by bochoa1
5.0 out of 5 stars Good thermometer
This thermometer works well. It takes standard watch batteries. Have had to replace the battery once in the year that I've had it. Read more
Published 29 days ago by Amanda Sickau
1.0 out of 5 stars Didn't consistently work
I was disappointed with this thermometer; it didn't consistently turn on from first using it on, and the prior temp didn't consistently show up when turning it on as described in... Read more
Published 1 month ago by paralelle
3.0 out of 5 stars beeping every 4 seconds is annoying
works great and is accurate, though the beeping every 4 seconds is rather annoying early morning when trying not to disrupt partners sleep.
Published 1 month ago by -E.D
1.0 out of 5 stars Not a true Basal Thermometer
I am under the impression that basal thermometers should read in hundredths (97.29) as opposed to tenths (97. Read more
Published 1 month ago by Barbara
5.0 out of 5 stars Works great
This works great. I never have problem using it. It takes a while to read but most Basal Thermometer are like that anyway. The price is good too.
Published 2 months ago by Sheila
5.0 out of 5 stars Digital Thermometer
I bought this to start charting my temps just to get a better understanding/handle on my cycles. I love it. Read more
Published 2 months ago by jessica pruitt
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