Spark Plug Tester with Dual Test Holes

FEATURES DUAL-HOLE SIMULTANEOUS TESTING: Allows simultaneous testing of two spark plugs, enabling quick comparison and diagnosis of ignition issues in multiple cylinders. ADJUSTABLE WORKING FREQUENCY: The adjustable frequency range (up to 6000 RPM) accommodates different engine types and conditions, ensuring accurate testing across various vehicles. PROTECTIVE COVER DESIGN: Features a robust protective cover that shields users from potential sparks and debris during testing, enhancing safety and reliability. DURABLE CONSTRUCTION: Constructed from high-quality plastic and metal components, ensuring durability and longevity even under rigorous use in professional automotive environments. OPERATION STEPS PRODUCT DETAILS SPECIFICATION Power Supply: 100-240V Weight: 354g Analog Speed: 0-6000rpm Size: As shown below Package Includes: 1 * Spark plug tester, 1 * Instruction manual, 1 * Charger NOTES Always ensure the engine is turned off before using the spark plug tester. Follow the manufactu