Features: 1. [ Dual Hole Testingand Time Saving]: The ANCEL Car Spark Plug Tester is able to dual-hole simultaneous testing as well as analog engine working, which is much more efficient and time-saving. 2. [0 to 6000rpm Operating Frequency]: The ANCEL Car Spark Plug Tester is designed with adjustable working frequency, the range can reach 0 to 6000rpm. Can be adjusted as you required. 3. [Widely Application]: 12V Gasoline vehicles car spark plugs, 100V-240V input voltage . 4. [Easy operation Plug And Play]: Easy operation, plug and play. Come with indicator light, the status of the spark plug can be displayed more intuitively. Specification: x Mold:spark plug tester x Input: 100-240V AC x Length of external: 1m x Host size: 145x90x114mm x power supply: Power Adapter x Power Adapter: Output 12V 1A DC x Suitable for 12V driven gasoline car spark plugs x Usage: Test car spark plug performance and ignition intensity Package included: 1x ANCEL Car Spark Plug Tester main unit 1x Packing box 1x User manual 1x EU Plug Adapter ConnectorSpark Plug Tester Dual Hole Diagnostic Tool Gasoline Car Ignition Analyzer 12V For EU Plug Adapter SZRH A-C