How to switch between °C and °F?

With the thermometer off, press and hold the SET button for 5 seconds until the buzzer beeps, then press the SET button briefly to change units.

How to switch measuring mode?

With the thermometer off, press the SET button, the buzzer will beep. Short press the SET button(by holding for under 2 secs) to choose measuring mode-Oral, Armpit or Rectal measuring location.

Why are the temperature readings inconsistent?

If the measurement result is incorrect, the user should first check whether the thermometer is used correctly. Please read the instructions in detail.

Can this thermometer be used for babies?

Yes, this thermometer can be used for babies, toddlers and adults for the whole family.

How do view memory temperature data?

Press the on/off button and the screen will display 188.88, then press the Set button to enter the view memory mode. Press the Set button again to view the next set of temperature data.

Boncare 9 Seconds Digital Basal Thermometer For Adults And Kids

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Description

⏳ Don’t wait to feel great—Boncare delivers precision in a flash!

SMART FEVER ALERT - Instant fever alarm notifies you when it’s time to take action—stay ahead of illness.
MULTI MODE MEASUREMENT - Switch effortlessly between oral, armpit, and rectal modes for tailored accuracy.
LIGHTNING FAST ACCURACY - Get precise temperature readings in just 9 seconds—because every second counts.
BASAL BODY TRACKING READY - Perfect for fertility monitoring with manual basal temperature tracking—empower your family planning journey.
CLEAR INTUITIVE DISPLAY - Large, backlit LCD screen ensures easy reading anytime, day or night.

The Boncare 9 Seconds Digital Basal Thermometer combines rapid 9-second readings with high-precision 0.1°C/°F resolution, making it ideal for all ages. Featuring flexible measurement modes (oral, armpit, rectal), a large backlit display, and a smart fever alarm, it’s designed for seamless home use and basal body temperature tracking. Lightweight, FDA-approved, and user-friendly, it’s the must-have health companion for proactive wellness and fertility monitoring.

Specifications

ASIN	B0CWTTHJCQ
Additional Features	Alarm, Auto Off, Backlit, Fast Reading System, Large Display
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#321,457 in Health & Household ( See Top 100 in Health & Household ) #90 in Oral Thermometers
Brand	Boncare
Brand Name	Boncare
Color	White
Customer Reviews	4.2 out of 5 stars 134 Reviews
Display Type	Digital
Included Components	thermometer
Indoor Outdoor Usage	Indoor
Item Length	5 inches
Manufacturer	Hangzhou Universal Electronic Co.,Ltd.
Model	T28
Model Name	T28
Number of Batteries	1 Lithium Metal batteries required. (included)
Outer Material	Plastic
Part Number	T28
Power Source	Battery Powered
Product Care Instructions	Wipe Clean
Resolution	0.1°C or 0.1°F
Response Time	9 seconds
Reusability	Rechargeable
Special Feature	Alarm, Auto Off, Backlit, Fast Reading System, Large Display
Specification Met	FDA
Style Name	Simple" or "NA
UPC	768572360969
Unit Count	1 Count
Upper Temperature Range	100 °F

Reviews

L**C

Easy thermometer!

Solid thermometer with two decimal places. Works great!

19.09.2026

V**A

Perfect

Accurate love the size and it’s fast!!

15.02.2026

R**R

My new thermometer

It's nice. In a case and very easy to use multiple ways. It got here quick. Thanks.

9.05.2026

M**.

Always default to Fahrenheit!

Forget this one if you want to read Celcius. After configuring to celcius, it came back to Fahrenheit when turning on. Useless!

28.08.2026

A**E

Boncare 9 Seconds Digital Basal Thermometer for Adults and Kid

This thermometer appears to be both accurate and reliable. I appreciate its quick readings; however, I find the display somewhat difficult to see. My unit lacks a backlight, featuring only an analog LED readout against an unlit gray background.

2.01.2025

S**7

Great

Works well and large screen

27.04.2026

J**9

Works fast.

Works well. Able to see display well.

18.06.2026

T**R

Good product

Easy to see. Works fast.

6.05.2026

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Boncare 9 Seconds Digital Basal Thermometer for Adults and Kids - Accurate Rectal Thermometer with Fever Alarm, Oral Thermometer for Baby with Large Display (White)

Details

Details

Description

Specifications

Reviews

Common Questions