Power on to light up the instrument, perform fault diagnosis function tests on the instrument, collect information, set data, etc Support instrument startup testing Support startup testing of fourth generation instruments Reserved interface for expanding more instruments Suitable for instrument panel startup platform (high-end version) Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Colour:Photo Color Material:ABS Package Contents: 1x Car instrument maintenance test platform Only 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.