Features: 1. You can quickly and easily diagnose whether the car ignition system is working properly, avoid fires and burn out the ignition coil. 2. It provides a safe and reliable troubleshooting method that is convenient, economical and quick. 3. Made of high quality aluminum for durability and high quality. 4. The ABS head is easy to insert and durable, making it the right choice. 5. The internal LED light will tell you if the ignition system is normal. Specifications: Test range: Ignition coil generator (traditional coil, double spark coil, single spark coil), fan, magnetic solenoid valves, emission gas control value, fuel injectors, relay. etc. Material: ABS Battery: 2*1.5V AAA battery Package list: 1 * Auto Ignition Coil Tester Safe operations: 1. The car to be tested should park in an area with good air conditioning, cannot suck emissions engine exhaust. 2. The car to be tested should be kept away from smoke and fire sources; Gasoline engine and rechargeable battery can produce explosive air, so it is very necessary to prepare fire extinguishing equipment accordingly. 3. During the testing process, it is necessary to avoid moving parts and heat source to protect the tester and testing equipment. 4. Be away from the engine cooling fan. 5. Do not place other equipment on the battery, which may make the battery inside short, which may cause injury or damage to the tester and equipment. 6. Make sure to turn off the ignition before connecting or removing electrical parts. 7. Do not leave the car during the test. 8. Please confirm the car's gear position: automatic is in P; the manual is empty; Press the hand brake firmly; put blocks before driving tires 9. Please read the relative warnings of the car manufacturer, pay attention to important warning information. Instructions: 1. To do Pen Power Signal Detector test components, there will be a flashing LED and corresponding spoken language if the park works fine. 2. With 2 different detectors on high sensitivity test can be power lines. 3. About Pen line antenna detector to specific test results. 4. There is about overturned detector pen model. Used for normal test, is used for strong magnetic field test.