--- product_id: 655029440 title: "- Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1" brand: "kaiweets" price: "VT8228" currency: VUV in_stock: true reviews_count: 8 category: "Kaiweets" url: https://www.desertcart.vu/products/655029440-brake-fluid-tester-pen-with-corrosion-resistance-probe-high-precision store_origin: VU region: Vanuatu --- # 3-color backlight for instant status Buzzer alarm at 3% moisture threshold ±0.3% precision accuracy - Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 **Brand:** kaiweets **Price:** VT8228 **Availability:** ✅ In Stock ## Summary > 🚦 Stay ahead of brake failure—test smarter, drive safer! ## Quick Answers - **What is this?** - Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 by kaiweets - **How much does it cost?** VT8228 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/655029440-brake-fluid-tester-pen-with-corrosion-resistance-probe-high-precision) ## Best For - kaiweets enthusiasts ## Why This Product - Trusted kaiweets brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant Visual Alerts:** 3-color LED backlight instantly signals brake fluid health—green, yellow, or red—so you never miss a warning. - • **Smart Safety Reminder:** Audible buzzer alarm activates when moisture exceeds 3%, prompting timely brake fluid replacement before it’s too late. - • **Compact & User-Friendly:** Lightweight, battery-powered design with data hold function makes testing quick, easy, and portable for pros and DIYers alike. - • **Precision You Can Trust:** High-accuracy moisture detection (±0.3%) ensures your brakes perform flawlessly every time. - • **Corrosion-Resistant Durability:** Built with a corrosion-resistant probe and rugged housing for long-lasting, reliable use in any garage or on the go. ## Overview The KAIWEETS Brake Fluid Tester Pen is a professional-grade diagnostic tool featuring ±0.3% measurement accuracy and a corrosion-resistant probe. It supports DOT3, DOT4, and DOT5.1 brake fluids, providing fast, reliable moisture readings with a 3-color backlight and buzzer alarm that alerts you when fluid moisture exceeds safe limits. Compact and battery-powered, it includes a data hold function for easy reading and is backed by a 3-year warranty and lifetime support, making it an essential safety tool for automotive professionals and enthusiasts. ## Description Product description High Precision Accurate readings allow you to promptly detect whether your brake performance is good Low Battery Reminder When the tester is low on power, it will remind you to replace the battery in time, allowing you to measure the brake fluid smoothly. Automatic Shutdown If the tester is not operated for 5 minutes, it will automatically shut down to save power. ## Features - Durable and Corrosion-Resistant : Featuring a corrosion-resistant probe, this brake fluid tester is designed for long-lasting performance. The durable construction ensures that the tool remains effective over time, even with frequent use, making it a reliable addition to your maintenance toolkit - Fast and Accurate Measurements : This brake system sensor ensures quick and precise readings with an accuracy of ± 0.3%, covering a range of 0% - 4%. Whether you're checking DOT3, DOT4, or DOT5.1 fluids, this device offers reliable results, helping you easily maintain optimal brake performance - Convenient Features : The brake fluid level sensor includes a data hold function, allowing you to capture and review readings easily. It also features a three-color backlight and buzzer alarm function, which will sound an alarm to remind you to change the brake fluid immediately when the humidity level exceeds the safety limit of 3%, providing additional convenience and safety - Convenient Power and Operation : With its compact design, this brake fluid tester is easy to carry and store. It operates on 2x1.5V AAA batteries and functions well within a temperature range of 0-40°C. Its user-friendly design and quick measurement capabilities make it an essential tool for both professional mechanics and DIY enthusiasts - Customer Service : KAIWEETS Provides a 30-day free return and a 3-year warranty for each product. Lifetime technical support, if you have any questions, please feel free to contact us. Enjoy faster and more efficient measurements with this brake fluid tester. Allowing you to promptly address any issues and ensure your vehicle’s braking system is always in top condition ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D9M279V9 | | Best Sellers Rank | #5,099 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Brake Fluid Level Sensors | | Brand | KAIWEETS | | Brand Name | KAIWEETS | | Customer Reviews | 4.6 out of 5 stars 453 Reviews | | Included Components | 1*brake fluid tester 2*AAA battery | | Item Dimensions | 9.92 x 2.56 x 1.57 inches | | Item Weight | 40 Grams | | Item dimensions L x W x H | 9.92 x 2.56 x 1.57 inches | | Manufacturer | KAIWEETS | | Material | Polypropylene | | Material Type | Polypropylene | | Model | KVBF01 | | Number of Items | 1 | | Part Number | KVBF01 | ## Product Details - **Brand:** KAIWEETS - **Item dimensions L x W x H:** 9.92 x 2.56 x 1.57 inches - **Manufacturer:** KAIWEETS - **Material:** Polypropylene ## Images ![- Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 - Image 1](https://m.media-amazon.com/images/I/71cQgnW2REL.jpg) ![- Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 - Image 2](https://m.media-amazon.com/images/I/71O5R6dXkEL.jpg) ![- Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 - Image 3](https://m.media-amazon.com/images/I/71QCxG7CwLL.jpg) ![- Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 - Image 4](https://m.media-amazon.com/images/I/71zC7TsQ2ML.jpg) ![- Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 - Image 5](https://m.media-amazon.com/images/I/816I1WYo8qL.jpg) ## Available Options This product comes in different **Color, Size, Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by G***E on February 7, 2026* ### ⭐⭐⭐⭐⭐ Review *by B***S on March 26, 2026* ### ⭐⭐⭐⭐⭐ Review *by J***A on April 16, 2026* ## Frequently Bought Together - KAIWEETS Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1 - Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack - ITEQ Brake Fluid Liquid Tester Pen with 5 LED Indicators, Calibrated For DOT3 DOT4 Brake Fluid --- ## 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.vu/products/655029440-brake-fluid-tester-pen-with-corrosion-resistance-probe-high-precision](https://www.desertcart.vu/products/655029440-brake-fluid-tester-pen-with-corrosion-resistance-probe-high-precision) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-06*