1. This instrument is a special equipment for oxygen sensor signal simulation2. dedicated to four-wire oxygen sensor signal,does not support broadband oxygen sensor signal simulation.3. the instrument needs external 12V-24V power supply to work4. need to disconnect the for original car oxygen sensor signal line, otherwise the for original car oxygen sensor signal and S03 simulator signal interfere with each other.Measure the output signal of the S03 simulator:1. there are 8 signal voltage indicators on the simulator, the signal voltage can be adjusted through the knob, the signal light indicates the average voltage of the signal2. Read oxygen sensor data stream with vehicle fault detector3. use the oscilloscope to view the signal waveform4. use a multimeter 5V DC voltage file to measure the signal voltage; The normal signal voltage is 0-0.9V constantly changingColour:BlackMaterial:ABSPackage Contents:1 set * oxygen signal simulatorOnly 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.