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Ships within 48 hours · Estimated delivery Aug 12 - Aug 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]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Cute addition!
Color: Black
As advertised. Good size for my sink area. Room for dish soap, hand soap pump and kitchen sponge. A place to hang my kitchen wash cloth too.
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Reviewed in the United States on January 22, 2026
★★★★★ 5
good buy
Color: Black
Nice looking, works well and well made.
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Reviewed in the United States on January 5, 2026
★★★★★ 4
Very sturdy and well designed organizer
Color: Black
Sturdy kitchen sink organizer. I measured and it truly is small. It holds large bottle soap, smaller bottle of cleaner, small round dish brush cleaner. The rack clips to the front and folds dish cloth. The tray slants toward sink for water to drain easily. I could have used a few inches longer. This makes a difference and I recommend for its sturdiness and useful design.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
I like it
Color: Black
This is cute. It does the job. Has been about 4 months now and I see no signs of rust so at this point, I would reccomend.
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Reviewed in the United States on November 29, 2025
★★★★★ 5
Keeps my countertops neat & dry
Color: Black
The perfect accessory for our new sink & counter top. It keeps things & water off of our new counter top and a place to hang my dishrag!
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Reviewed in the United States on January 19, 2026