Features: 100percent new and high quality. This injector tester can be used to help identify stuck, leaked or burned out conditions, it uses 12V vehicle battery for power. Large LED display or 4 Pulse Modes.It can work with any fuel pressure tester, easily to clean most car motorcycle fuel injectors. It will help us clean and test the injectors of gasoline cars and motorcycles. The engine of the car must be turned off before using this instrument. Specifications: Power Supply: 12V vehicle battery Operation Environment: 0-40C, relative humidity Less than 80percent Storage Environment: -20C-50C, relative humidity Less than 85percent Explanations for 4 modes: Mode 1: the tester outputs 1 pulse, whose pulse width is about 255ms Mode 2: the tester outputs 50 pulse, every pulse's pulse width is about 7ms Mode 3: the tester outputs 100 pulse, every pulse's pulse width is about 3.5ms Mode 4: the tester outputs pulse continuously at the rate of 50 pulses per about 1450ms, every pulse's pulse width is about 7ms Material: plastic colour: Black Package Contents: 1 x Car Fuel Injector Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.