Drive test ignition coil:including ignition, coil type, Module Type. Drive test fuel injector:including gasoline-powered car 12V fuel injector, diesel vehicle 12V 24V fuel injector. Drive and test solenoid valves and fuel metering valves controlled by various duty ratios. Drive and test motors controlled by various duty ratios, urea pump motors, etc. Drive and test idle stepping motors, instrument stepping motors, headlight follow-up steering stepping motor and so on. Hall signal with adjustable output frequency, amplitude and duty ratio. Used to simulate various duty ...