🎉 2026 Sale — Over 38,000 Sold! 🔧 Automotive Circuit Tester with Digital Display – Tests Voltage & Relays – DC 3.5-36V, Essential for Every Mechanic! ✨
🎉 2026 Sale — Over 38,000 Sold! 🔧 Automotive Circuit Tester with Digital Display – Tests Voltage & Relays – DC 3.5-36V, Essential for Every Mechanic! ✨
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FEATURES
DW833 2-IN-1 TESTER - A comprehensive dual-function diagnostic tool designed for professional mechanics to test automotive circuits and relays with precision and speed.

WHY CHOOSE DW833 - Comparing our integrated dual-function tester with legacy single-mode tools highlights the significant space-saving and time-saving advantages for technicians.

PROFESSIONAL HANDLING - Experience seamless one-handed operation with a form factor designed to fit comfortably in a mechanic's palm during long diagnostic sessions.

RUGGED GARAGE DESIGN - Features a high-brightness LED spotlight and reinforced coiled cabling to ensure longevity and ease of use in narrow engine bays.
UNIVERSAL VEHICLE SUPPORT - Whether you are working on a 12V family car or a 24V heavy-duty truck, this tester handles all electrical systems easily.

SPEC
Color: Blue, Red, Black
Circuit Testing Voltage: DC 3.5V to 36V
Relay Adaptation: 12V / 24V Universal
Supported Relays: 4-Pin, 5-Pin Standard Automotive Relays
Operating Temperature: -20°C (-4°F) to +55°C (131°F)
Package Includes: 1 * Automotive Circuit Tester with Digital Display

NOTES
Ensure the device is only used within the specified DC 3.5V to 36V range and do not connect to household AC power.
Avoid reverse polarity connection to prevent potential damage to the internal circuitry of the vehicle or tester.
Do not use the device in wet or rainy environments to maintain safety and prevent electrical shorts.
Shipping
Shipping
Please carefully review our Shipping Policy when purchasing our products. This policy will apply to any order you place with us.
SHIPPING & HANDLING
With busy special occasions including (but not limited to) Valentine’s Day, Women’s Day, Mother’s Day, Father’s Day, Independence Day, Halloween, and Christmas, ETA might extend a few days longer.
| Country | General Cargo | Battery Magnets | Cream Powder Liquid | |
| United States | Average Time(Business Days) | 10-13 | 10-13 | 11-14 |
| Canada | Average Time(Business Days) | 9-12 | 9-12 | 11-14 |
| Australia | Average Time(Business Days) | 11-14 | 10-13 | 17-20 |
| Germany | Average Time(Business Days) | 10-13 | 9-12 | 11-14 |
| France | Average Time(Business Days) | 10-13 | 9-12 | 12-15 |
| United Kingdom | Average Time(Business Days) | 7-10 | 8-11 | 10-13 |
| Italy | Average Time(Business Days) | 9-12 | 11-14 | 13-16 |
| Spain | Average Time(Business Days) | 8-11 | 8-11 | 10-13 |
| Mexico | Average Time(Business Days) | 12-15 | 13-16 | 12-15 |
| Brazil | Average Time(Business Days) | 12-15 | 12-15 | 29-32 |
| Other country | Average Time(Business Days) | 11-14 | 10-16 | 12-20 |
Please note:
- The above time frame is only applied for orders to the above countries with standard shipping methods.
- Delivery to military regions are currently limited. We are very sorry for the inconvenience.
- The majority of our orders are processed and shipped within the time frame we offer above. However, the time period above is only approximate and can differ in individual cases. Some items/orders may require a longer ship-out and/or delivery time frame.
- International orders: It may take additional days if orders have to go through customs. We have no influence on the customs process and apologize for any inconvenience due to delivery delays resulting from this.
- When order is ready to be shipped, a tracking link will be sent to your email so you can follow your package all the way home.
WHAT ARE MY SHIPPING & DELIVERY OPTIONS?
Logistics: 4PX、YunExpress、Wanb Express、UBI
| Order Price | Worldwide |
| £0~£29.99 | £3.99 |
| Over£30 | Free Delivery |
All times and dates given for delivery of the products are given in good faith but are estimates only.
For EU and UK consumers: This does not affect your statutory rights. Unless specifically noted, estimated delivery times reflect the earliest available delivery, and deliveries will be made within 30 days after the day we accept your order. For more information please refer to our Terms.
ORDER PROCESSING TIME
- Processing Time: 3-7 Days
- Shipping Time: 14-30 Days
DO YOU DELIVER INTERNATIONALLY?
We ship world wide.
NOTE
We may be subject to various rules and restrictions in relation to some international deliveries and you may be subject to additional taxes and duties over which we have no control. If such cases apply, you are responsible for complying with the laws applicable to the country where you live and will be responsible for any such additional costs or taxes.
WHAT HAPPENS IF MY ORDER IS DELAYED?
If delivery is delayed for any reason we will let you know as soon as possible and will advise you of a revised estimated date for delivery.
For EU and UK consumers: This does not affect your statutory rights. For more information please refer to our Terms.
QUESTIONS ABOUT RETURNS?
If you have questions about returns, please review our Return Policy.
HOW CAN YOU CONTACT US ABOUT THIS POLICY?
If you have any further questions or comments, please contact us at our Support Center
Why Choose Us?
Why Choose Us?
What Makes Us the Best
At Hestiy, we pride ourselves on the quality of our customer service and our dedication to delivering great products at reasonable prices in a timely manner. From at-home health and beauty to sunglasses, gym equipment and everything, you'll find it here.
High Quality with Unbeatable Prices
Our vision is to supply our customers with the highest quality product and service offerings available in the market today. We are committed to providing high quality merchandise for less. You don't have to stick to big brands anymore, here you can be creative and try new stuff!
Convenient & Friendly Customer Service
We believe that each and every one of our customers is extremely important to us. We make it a point to listen, learn and deliver based on our customer's needs and expectations. If at any time you have any questions, please contact our Support Center. We will make all reasonable efforts to address your concerns.
Delivery around the Globe
Partnering with internationally trusted logistic service providers, we ship to over 200 countries around the world. We know that you don’t want to wait weeks or even days for your purchase, so we ship out orders as soon as possible. We also provide tracking information on all packages so you’ll be able to keep an eye on where it is and when it will be delivered. If you have any questions about the status of your shipment, just contact us!
Contact Us
Contact Us
Questions, feedback or in need of more information?
Is your question not on one of our information pages or is something not entirely clear? Send an email to service@hestiy.com. Please offer your name, contact phone number and the city you live. Please share product photos if you ask for after sales service.
Customer Service - Hours of operation:
Monday through Friday 9:00 AM to 5:00 PM
Saturday 10:00 AM to 6:00 PM
Sunday Closed.
Frequently Asked Questions:
Q: How long will it take to receive my package?
A: Please note that we require 3 to 7 days on average to fulfill your order before dispatching it. Rest-assured we are doing everything in our power to get your order to you as soon as possible! Once your order is dispatched, depending on your country or region, estimated delivery time is between 14 to 30 days. Please consider any holidays that might impact delivery times.
Q: What is the company return policy?
A: After receiving your return and inspecting the condition of your item, we will process your return or exchange. Please allow at least 14 days from the receipt of your item to process your return or exchange.
Q: How can I contact you regarding my order?
A: You can contact us via email at service@hestiy.com or by using the form located on this page.