Car Circuit Repair Tools Car Sensor Signal Simulator Resistor Adjustable Resistor Potentiometer WY-XH100 Vehicle signal simulator The product can simulate adjustable resistors, with a test light signal function, can simulate the post-processing exhaust temperature sensors, level sensors, fuel temperature sensors, liquid temperature sensors, water temperature sensors, ambient temperature sensors:, but also simulate the intake pressure temperature sensors, test light function can be a quick judgment of the fuel injector pulse signal, the crankshaft position sensor signals is a fast troubleshooting of your advantageous tool.