When reversing for image appeared on MIB PQ(without OPS), the for image will be displayed on the screen for 8 seconds when you setback the car. 8 seconds if no camera video signal, MIB will take it as system failure! Generally our Cameras are powered by reverse lamp, when we take out the reverse lamp, if not other camera equipments are included, there will be no power supply, so display shows fault code! So again when you set back the reverse gear, the screen will not display reverse for image again! This product can delay power supply for 10 seconds, and only the last record of trigger for time delay will be recorded, can be the perfect solution to the problem of MIB reversing!