Application
The OBDResource 12V 24V Automotive Relay Tester is a must-have for quick relay checks, compatible with 12V/24V, 4-pin/5-pin NO/NC relays (auto-detection), easy to use, fit for mechanics/shops/enthusiasts, saving diagnosis time.

Technical Parameter
【Brand You Can Trust – OBDResource】Built by OBDResource, a trusted name in automotive diagnostic tools, this 12V 24V relay tester ensures fast and accurate relay diagnostics for most cars and trucks.【Wide Compatibility – 12V & 24V Relays】Works perfectly with most automotive relays, including both 12V relays and 24V relays, making it suitable for cars, trucks, and heavy-duty vehicles.【4-Pin & 5-Pin Relay Testing Modes】Easily switch between 4-pin and 5-pin relay tests using the built-in selector (↑ for 4PIN / ↓ for 5PIN). Designed to test both normally open (NO) and normally closed (NC) relays accurately.【Smart LED Indicator Display】Clear visual results: Green light = relay normal, Red light = relay faulty. Quickly identify bad relays without guesswork or manual wiring.【Quick & Easy Operation】Connect the tester clips to your vehicle’s battery (red clip to positive, black clip to negative), insert the relay into the socket, and press “TEST.” The OBDResource 12V 24V relay tester will automatically detect and evaluate the relay’s function.【Safe & Durable Design】The testing process is safe, reliable, and won’t damage the relay’s internal circuit. High-quality construction ensures long-lasting performance for both DIY users and professionals.

Application
Two power supply modes, easy to use, wireless bondage, low power alarm, automatic shutdown and power saving

Technical Parameter
1. Intelligent Recognition: Supports and automatically identifies (no selection required) 12V/24V relays; plug in and test immediately. (Most products on the market can only test 12V relays.)2. Wide Relay Compatibility: Supports five different pin configuration types of relays, over twenty types of relays (similar products on the market typically support four or three pin configurations).3. Capable of testing regardless of whether the relay is normally open or normally closed by default. (This feature is not available in market products which require manual judgment of the internal wiring type of the relay.)4. Battery-powered: Operates on three AA batteries (3pcs * AA battery), eliminating the need to connect to a battery for power supply, allowing for immediate testing whenever needed. (Most products on the market require a battery clamp for power, limiting their use.)5. Energy-efficient: Automatic shutdown (shuts down if there's no operation within one minute, with zero power consumption after shutdown). During testing, it provides audio and visual prompts simultaneously (dual-color LED indicator light – green, red + buzzer).6. Thoughtful Alerts: Low battery warning (buzzer sounds twice at intervals of five seconds) + LED light prompt.7. Pin Configuration Switching: Switch between 4-pin and 5-pin configurations (similar to other products on the market of the same type).8. Power Supply Method: In addition to batteries, supports TYPE-C power supply, allowing the use of a TYPE-C cable to connect to a laptop, power bank, adapter, etc., for power-supplied testing.9. Craftsmanship and Material: Silicone spray-oil process, more environmentally friendly, with a better feel.10. Quality Assurance: The product comes with a 3-year warranty, a 1-year replacement guarantee, and a 3-month return policy (quality assurance).