For , it must with navigation for your car. NEW Speed Limit Information (SLI) Emulator for NBT F/G-Series with NBT Professional and Extended Instrument The Emulator displays a speed limit road sign in in the instrument or HUD. Requirements:For with the extended instrument 6wa/6wb and NBT Professional Satellite Navigation (Wide 8,5 inch screen). The message shows: Date Speed limit reminder Average speed Average energy consumption Current energy consumption Time of arrival Distance to destination Attentions: 1. the car needs semi-liquid crystal meter or liquid crystal meter 2. The default pick is at the F position, you need to dial to the corresponding position 3. Corresponding series programming 4. The car must , and the speed limit sign will be displayed only when the speed is limited. Colour:black Material:ABS Package Contents: 1x Speed Limit Module 1x Cable Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.