---
product_id: 37843523
title: "Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator for DOT4"
brand: "lumtics"
price: "€ 26.86"
currency: EUR
in_stock: true
category: "Kitchen"
url: https://www.desertcart.hr/products/37843523-brake-fluid-tester-pen-automotive-diagnostic-tool-vehicle-liquid-tester
store_origin: HR
region: Croatia
---

# Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator for DOT4

**Brand:** lumtics
**Price:** € 26.86
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator for DOT4 by lumtics
- **How much does it cost?** € 26.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/37843523-brake-fluid-tester-pen-automotive-diagnostic-tool-vehicle-liquid-tester)

## Best For

- lumtics enthusiasts

## Why This Product

- Trusted lumtics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Operation Guideline: 1. Unscrew the brake fluid reservoir,and pull off the cap of the Brake fluid tester pen.Dip the test probes into the brake fluid up to the plastic rim of the device. 2. Press the button for power on,green LED will light up.Insert the tester into reservoir for one second then the tester result will be correctly indicated by LEDs.Repress the button for power off.The tester will automatically power off after about 15 seconds of inactivity. Indicator Instruction: 1) 5 LEDs indicating the water % in the brake fluid: 2) 0% light indicates that the battery is OK, no replacement 3) 1% light indicates that moisture content of brake oil less than 1% , brake fluid has a good performance, and ease of use. 4) 2% light indicates that moisture content of brake oil less than 2%, brake fluid can be continued to use 5) 3% light indicates that moisture content of brake oil less than 3% , proposed to replace brake fluid. 6) 4% light indicates that moisture content of brake oil less than 4%, brake fluid should be replaced immediately. Notice * Replace battery if the Green LED not light up any loger after you press power on button. * Wash the test probe with tap water after every use. * In case of skin contact with brake fluid, thoroughly wash the affected skin or clothing with water. * Do not expose brake fluid to the atmosphere for a long time as the fluid is hightly hygroscopic! * Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understanding.

## Features

- DOT4 brake fluid goes bad is because of the moisture content increase, so the 5 LED indicators will show the percentage of water in the brake fluid, help you to konw the time of the brake fluid replacement
- Operated by a LR03 AAA 1.5V battery ( Battery Not Included), put the probe into the brake fluid and read the result, accroding to the LED light konw the moisture content
- Automatically power off, the tester will automatically power off after 12 seconds of inactivity
- To check the quality of brake fluid quality, quickly and easily test moisture content in the brake fluid
- The tester can be used as a digital brake fluid tester suitable for determining brake fluid quality.Developed for professional use in astomotive repair shops and in servicing

## Images

![Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator for DOT4 - Image 1](https://images-na.ssl-images-amazon.com/images/I/4185698n-wL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hr/products/37843523-brake-fluid-tester-pen-automotive-diagnostic-tool-vehicle-liquid-tester](https://www.desertcart.hr/products/37843523-brake-fluid-tester-pen-automotive-diagnostic-tool-vehicle-liquid-tester)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-23*