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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
DUOYI DY23B Car Brake Fluid Detection Pen Moisture Tester, DY23B1. Brake pressure was transmitted by brake fluid, the pressure transmission will out of function once brake fluid including too much water. In order to safe driving, we must test water ratio scale in brake fluid regularly. The brake fluid tester help us do current maintenance, make sure we drive in safety condition. 2. HD backlight dual display, support backlight display glare and easy reading day and night. 3. Operation Manual: (1). Install one
1. Brake pressure was transmitted by brake fluid, the pressure transmission will out of function once brake fluid including too much water. In order to safe-driving, we must test water ratio scale in brake fluid regularly. The brake fluid tester help us do current maintenance, make sure we drive in safety condition.2. HD backlight dual display, support backlight display glare and easy reading day and night.
3. Operation Manual:
(1). Install one 9V(6F22) battery at the back of tester.(not included)
(2). After inserting the battery, press POWER button to turn on the tester, all LEDs lights turn on with buzzer sounding, which indicates the product self-test is successful.
(3). Press SELECT button, it will locate DOT3 model automatically.
(4). Each time you push the SELECT button, it will recycle from DOT3 to DOT4 to DOT5.1 with the indicator LEDs.
(5). Immerse the probe into brake fluid and you will get different colors of LED lights, they indicate:
Green Light: indicates the brake fluid water content is below 1%
The First Yellow Light: indicates the brake fluid water content is approximately 1.5%
The Second Yellow Light: indicates the brake fluid water content is approximately 2.5%
The First Red Light: indicates the brake fluid water content is approximately 3%
The Second Red Light: indicates the brake fluid water content is more than 4%
(6). Press POWER button to turn off the tester.
4. Note:
(1). After use, please clean the probe and avoid any retention of stains that might affect the test.
(2). If in use for a long time, best to remove all batteries and store in a dry place at normal room temperature.
5. Package include:
Brake fluid tester x 1
User manual x 1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.7 ★★★★★
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Product Reviews
★★★★★ 5
Children's outerwear, a must have .. excellent quality, fit & price!
Size: X-Small, Color: White
One of the very best pull over sweatshirts I've come across. Quality fabric with an amazing cut & fit that rises above the standard, more boxy cut of children's sweatshirts I've purchased in the past. With an 8 year old granddaughter that's constantly on the go & is never cold lol, I needed a piece of outerwear that wasn't too thick, bulky or restrictive that she'd forget she was wearing. A piece of clothing that would keep her warm yet comfortable, thru out her day & boy did I hit the jackpot. All of the above plus an overall amazing fit & stylish look I wasn't expecting but could tell she absolutely loved. An added bonus, after at least 15 or more washes to-date, it still looks & fits as good as it did the very first time she wore it. I've since purchased other similar items but none compare. An excellent buy !!!!
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Reviewed in the United States on April 4, 2025
★★★★★ 5
Fantastic but runs small!
Size: Large, Color: Aqua Blue
Runs quite small. Daughter is 9 yrs, 4.5 ft, 60 lbs, ordered large, was almost too tight to get on her body.
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Reviewed in the United States on October 5, 2025
★★★★★ 5
Great fit and comfortable for gym class
Size: X-Large, Color: Bright Pink
My daughter wore this for her gym class and it fit her really well. She didn’t complain about it being tight or uncomfortable, and she loved the color. The material feels soft and lightweight, and it held up well after washing. I’d buy it again in another color.
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Reviewed in the United States on December 1, 2025
★★★★★ 5
A very adorable, exceptional quality sweatshirt for a inexpensive price, bought two
Size: Small, Color: Light Mauve
I bought two of these for my granddaughters as well as iron on stickers from Amazon to put their initials on the front of the shirt. The sweatshirts were some of the best quality I’ve ever seen from the stitching, to the thickness, softness. And not to mention the price.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Great hoodie
Size: Large, Color: Navy
Got this hoodie for my son and he’s been living in it ever since. It’s thick, warm, and fits really well. The color looks even better in person, and it’s held up after a few washes with no fading or shrinking. You can tell it’s good quality by the stitching and feel. Definitely worth it if you want something that’s both cozy and stylish.
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Reviewed in the United States on November 5, 2025