• 【Dual Testing Capability】The JF109 spark plug tester features two test holes, allowing simultaneous testing of two spark plugs for efficient comparison and diagnosis.
• 【Adjustable Testing Frequency】With a rotary key switch, users can adjust the testing frequency from 1000rpm to 6000rpm/min, providing versatile testing options for different spark plug conditions.
• 【Wide Compatibility】Suitable for 12V gasoline vehicle spark plugs and accepts a 100V-240V input voltage, making it a versatile tool for various automotive applications.
• 【Performance Analysis】The tester evaluates spark plug performance and ignition strength, helping to identify faulty spark plugs through comparative testing.
• 【Safety Features】Equipped with an indicator light and designed for user safety, the tester should be powered off before inserting spark plugs, and users should avoid touching spark plugs during operation due to high voltage.

Specifications:

• Model: JF109
• Test Holes: 2
• Voltage Compatibility: 12V (for vehicle spark plugs)
• Input Voltage: 100V-240V
• Testing Frequency Range: 1000rpm - 6000rpm/min
• Application: Testing spark plug performance and ignition strength
• Suitable for: 12V gasoline vehicle spark plugs
• Features: Adjustable frequency, comparative testing, indicator light