Universal Application: The automotive relay tester is compatible with 12/24V voltages and supports testing for 4-pin/5-pin automotive relays, enhancing your convenience. Continuous Operation: Equipped with two large-capacity 18650 batteries, the Car Relay Tester operates continuously without needing an external power source, making it an essential tool for on-the-go diagnostics. Fast and Accurate: The Relay Tester Automotive Kit delivers speedy and precise measurements, ensuring smoother car repair tasks. Portable: Its compact size allows for easy storage in briefcases or school bags, making it an ideal recommendation for drivers. Easy to Use: This Auto Circuit Tester intuitively detects relay conformance during each test phase, including pin positions and action release times. Features: Includes two large-capacity 18650 batteries for uninterrupted use without external power. Compact and easy to carry, fitting easily in briefcases or school bags. Provides accurate and fast measurements for efficient work. Specifications: Name: Car Relay Tester Material: ABS Weight: Approximately 550g Size: Approximately 9.7 x 2.7 x 20 cm (3.82 x 1.06 x 7.87 inches) Instructions: Insert two batteries into the device, ensuring correct polarity (+/-). Select the relevant voltage setting (Off/12V/24V) for the automotive relay under test. Choose between 4-pin or 5-pin settings as appropriate for the relay. Select the appropriate relay and press the "Test" button to initiate testing. Press "Test" to execute ten test cycles. A buzzer and "OK" on the display indicate a good relay, while "Bad" indicates failure. Turn off the device by switching to "Off" after testing is complete. Package Includes: 1 x Relay Tester Tool Notice: The charging plug conforms to national standards. Please provide your own adaptor if necessary. Note that lighting effects and camera angles may cause color discrepancies. Product dimensions may vary slightly due to manual measurement.