Brake Fluid Tester Pen for DOT3 DOT4 DOT5 DOT5.1 with 3‑Color LED Display

• Material: Industrial‑grade ABS
• Display: 3‑colour LED indicator 
• Operating Temperature: 0 – 60°C
• Battery: 2 × AAA batteries 
• Product Dimensions: 6.73 × 1.56 × 0.87 inches 
• Weight: 71 g

Product Highlights

• High‑precision moisture detection – accurately measures the water content in brake fluid, helping you determine when a fluid change is needed to maintain braking performance and safety.
• 3‑colour LED display for instant results – provides clear, easy‑to‑read feedback: green (fluid good), yellow (acceptable), red (replace immediately), simplifying interpretation without needing a digital screen.
• High‑sensitivity probe for accurate readings – the sensor responds quickly and reliably to moisture levels, ensuring consistent and trustworthy results every time.
• Portable and battery‑operated – powered by two replaceable AAA batteries, with a lightweight 71 g design, making it easy to carry and use in workshops, garages, or on the roadside.