Categories: Automotive Diagnostic Tools, Brake Fluid Testers, Hot Products
Upgrade Your Brake Fluid Testing from Guesswork to Data-Driven Diagnostics
The QBH WT01 brake fluid liquid tester is designed for automotive professionals who require fast, accurate, and reliable brake fluid condition analysis.
Unlike traditional brake fluid liquid tester pen devices that rely on simple LED indicators, the WT01 delivers clear digital readings with an LCD display, allowing technicians to instantly evaluate brake fluid quality and make informed service decisions.
Whether used in routine inspections or advanced diagnostics, this electronic brake fluid tester transforms brake fluid testing into a professional, data-driven process.
Detect Brake Fluid Issues Before They Become Safety Risks
Brake fluid contamination is one of the leading causes of brake failure and reduced stopping performance.
As moisture accumulates inside the braking system, it lowers the boiling point and increases the risk of vapor formation under high temperatures.
With the WT01, technicians can quickly test brake fluid condition and identify unsafe levels before they lead to costly repairs or accidents.

Key Features of QBH WT01 Brake Fluid Liquid Tester
Digital LCD Display for Clear Results
Provides accurate numerical readings, eliminating guesswork and improving diagnostic confidence.
Flexible Probe for Easy Access
The metal gooseneck probe allows testing in deep or narrow brake fluid reservoirs.
Fast Response Testing
Delivers real-time results within seconds, improving workshop efficiency.
Dual Alert System (Sound + Visual)
Audible alarm and screen warning notify users when fluid condition becomes unsafe.

Multi-Fluid Compatibility
Supports DOT3, DOT4, and DOT5.1 brake fluids for wide application coverage.
Portable Handheld Design
Lightweight and easy to operate with one hand, ideal for busy service environments.

Compared with basic electronic brake fluid tester pen models:
- More accurate digital readings
- Clear LCD visualization for customer communication
- Faster testing process
- Better suited for professional workshops
It also works as a pre-diagnostic tool before using a brake fluid bleeder or brake bleeding machine, ensuring proper maintenance workflow.
Designed for Professional Automotive Use
The WT01 is not just a tester—it is a complete car diagnostic tool for:
- Automotive repair workshops
- Fleet maintenance operations
- Vehicle inspection services
- Auto parts distributors
- OEM automotive tool brands

Improve Service Efficiency & Customer Trust
With visible test results on the LCD screen, technicians can clearly explain brake fluid condition to customers.
This transparency helps increase service approval rates and workshop profitability, making the WT01 an essential tool for modern automotive businesses.
🔧 Applications
- Brake fluid condition testing
- Preventive vehicle maintenance
- Pre-service inspection before brake fluid replacement
- Fleet safety inspections
- Automotive diagnostic workflows
Are you looking for a reliable brake fluid liquid tester to upgrade your automotive diagnostic tools lineup?
The QBH WT01 brake fluid liquid tester is engineered to deliver precision, efficiency, and professional-grade performance, making it an ideal choice for workshops, distributors, and automotive brands.
Whether you need OEM customization, bulk pricing, or product samples, QBH provides flexible solutions to support your business growth.
| WT01 Host Specifications |
| Test Range of Oil Products |
DOT3, DOT4, DOT5.1 |
| Measurement Range |
0.1% – 6% |
| Language |
English |
| Backlight |
Yes |
| Alarm |
Yes |
| Test Time |
0.5 seconds |
| Power Supply |
9V Alkaline Battery |
| Working Temperature |
-10°C ~ 50°C |