Why We Must Have — 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.

Operation Manual:

1. Install one 9V(6F22) battery at the back of tester.

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.

Attention Please:

Because items with batteries can not be shipped by post air mail, the package does not include  battery.

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.

Package include:

1x Brake fluid tester
1x User manual (in English)
battery not include

HD backlight dual display

Support backlight display glare and easy reading measurement at night

When the brake oil water content is detected to exceed 3.0% 
The instrument screen turns red and a "beep"
alarm sounds/Dual display screen/Backlit display

Anglog bar graphics
Water ratio scale
Low battery warning
High moisture stop using
A certain amount of moisture pay attention to use
Low moisture
Mute symbol

Low water ratio / Medium water ratio pay attention / High water ratio replace
Support brake oil type

product comparison

DY23B AUTOMOTIVE BRAKE FLUID TESTER
Segment display moisture content
With sound alarm function
Can detect DOT3 / DOT4 / DOT5 . 1 brake oil
White LCD backlight provides night and dark working environment
Red light LCD backlight warning unqualified oil
9 volt ( 6F22 ) dry battery power supply
Battery power button prompt
Low voltage alarm
FEATURES :
Goose neck probe provides flexibility of detection
Fast warm-up
Sound and light alarm

DY23 AUTOMOTIVE BRAKE FLUID TESTER
With sound alarm function

Can detect DOT3 / DOT4 / DOT5.1 models Brake Fluide 
9V ( 6F22 ) dry battery power supply
FEATURES :
Goose neck probe provides flexibility of detection
Fast warm-up
Sound and light alarm

DY23B / DY23
More than a test a little less worried about five product features and advantages

1.Folding elbow
Easy to measure , durable
Curved tube lenath : 250MM

2.Highly sensitive probe
With 250mm stainless steel serpentine tube
Highly sensitive and fast response measurement with advanced high

3.Lighting beep alarm function
Double prompt , test result
At a glance ( DY23 )

4.Screen display
2-inch screen display , More intelligent ( DY23B)

5.Light and compact
One hand control , easy to hold
Follow the hand-designed body

6.Battery compartment design
Longer battery life with
9V battery