All machines doing any kind of measuring needs a regular control. This device is made to generate special signals, and simulate the electrical parameters of automotive sensors. The signals are sent to the „dummy” sensor installed in the machine, where we can test the awaited response because of the well-known, and accurate generated input. The generated signals can simulate the correct working sensor or a sensor failure as well. These test can provide accurate current (i.e 7-14 mA) on a square waveform, or very low current (<5nA) in the leakage test.