Features: Experience precise spark plugs diagnostics with our LCD adjustable spark plugs tester, featuring a clear digital display for realtime result and enhances efficiency. This tester offer adjustable output voltage to accommodate various spark plugs types, ensuring comprehensive testing capabilities with advanced safety features to prevent overloads and short circuits. For automotive technicians, car enthusiasts, manufacturers, and suppliers who require accurate spark plugs performances assessments. Perfect for use in auto repair shops, personals garages, racings team, and technical training courses, enabling quick and reliable spark plugs evaluations. Its lightweight, portable designs allows for easy transport and operation, making it a essential diagnostic tool for maintaining optimally vehicle performances. Specifications: Component:Metal+Plastic Host Size: Approx.135x125x120mm/5.31x4.92x4.72inch(Main body) Model：CNBJ-920 Display：LCD Display screen Revolutions ranges：200-9000R/M Weight：358g Working conditions：-10 °C-45 °C Backlight：Blue Input method： 1: Power adapter (DC12,2A) 2: cable input (DC12V) Relative humidity：85% Storage conditions：-20°C-50℃ Package Includes: 1 Set Spark Plugs Testing Device note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.