Material and build Crafted from durable ABS material, this 12V Automotive Relay Tester is built to last. Its robust construction provides reliable performance across automotive diagnostic scenarios, making it a dependable tool for enthusiasts and professionals alike. Ease of use Designed for simplicity and efficiency, this relay tester enables quick and accurate testing of automotive relays. The user friendly interface allows beginners to operate it with ease, saving time and effort during vehicle diagnostics. Versatility and compatibility This professional battery checker and relay tester is suitable for a wide range of vehicles, including cars, trucks, and motorcycles. Its compatibility with 12V electrical systems makes it an essential tool for diagnosing electrical issues in most automotive setups. Accurate diagnostics Equipped with advanced technology, this auto diagnostic tool provides precise readings for relay and battery conditions. Its reliable performance helps identify faults quickly, ensuring timely repairs and maintenance. Practical applications Use in a car with starting issues to verify ignition relay and battery health, helping determine whether the fault lies with the relay or the battery. Inspect a truck's electrical system to confirm relays controlling lighting or accessories are functioning properly and quickly pinpoint faulty relays. Check relays and battery condition on motorcycles or other 12V vehicles after component replacement or during routine electrical maintenance.