1. EASY TO USE: Increase your test confidence with the red LEDs of our relay tester that indicate faults and green LEDs that signal normal relay performance. Easily evaluate contact details, closing time, and relay bursts with comfortable and accurate results. 2. Durability: Our relay testers are built with materials and quality components, ensuring reliable performance. The robust construction and odor design make it safe for testing vehicles. 3. Practical: Conduct efficient tests on your electrical systems with this relay tester. Its compact and lightweight design makes it the travel companion, easily portable for home or school use. Store it in the convenient carry bag. 4. for Gifts: This car relay tester kit is the ideal gift to show your care and love to family and friends on special occasions like birthdays, Father's Day, Halloween, or Christmas. Give the gift of safety and keep their cars running smoothly.