1. [VERSATILE APPLICATION] Ideal for both professional mechanics and DIY car owners to monitor brake fluid quality
2. [REAL-TIME RESULTS] feedback on water content in brake fluid to maintain optimal vehicle performance
3. [USER-FRIENDLY INTERFACE] Intuitive design with clear instructions for easy and efficient testing
4. [CONVENIENT STORAGE] Compact size and lightweight for portable use and effortless storage in toolboxes
5. [VALUE PACK] Includes brake fluid tester pen and user manual for immediate use and reference

Spec:
Item Type: Brake Fluid Liquid Tester
Model: HT662
Material: ABS
Battery: 2 x 1.5V AAA battery(not include)
Basic Parameters:
Detection Range: 0%~4%
Error: ±0.3%
Detection Type:
DOT3, DOT4, DOT5.1
Use Environment:
Working Temperature: 0~40℃
Storage Temperature: -10~50℃
Humidity: ≤95%
Altitude: ≤2000 meters

How to Use:
On Or Off:
Press the power button and hold for more than 1 second to turn on, the beep will beep once, the display will light up, and will enter the test state; in the power on state, press the power button to shut down.
Function Switch:
The default brake fluid type detected by the detection pen is DOT3; press the function switch button to switch to DOT4; press again to switch to DOT5.1; press again to return to DOT3, and so on.
Detection:
After power on, select the type of brake fluid to be tested. Before testing, make sure the metal probe is clean, immerse the metal part of the testing head in the liquid to be tested for 3 seconds, wait for the display to stabilize, observe the state, and read the value. When the value is 0~2%, the green backlight is bright, indicating that the brake oil can still be used; 2~3%, the bright yellow backlight, the buzzer sounds slowly, indicating that the brake oil needs to be replaced; more than 3%, the bright red backlight, the buzzer quick sound, please change the brake fluid immediately.

PackageList:
1 x Brake Fluid Liquid Tester
1 x User Manual