1. Automatically switch lights on and off - Automatically turn on the lights when the light gets dark and turn off when the light gets brighter 2. Normal mode - Automatically turn on the lights when entering the tunnel and automatically turn off the lights when exiting the tunnel 3. High speed mode - The lights automatically turn on when entering the tunnel and turn off automatically after 1-2 seconds when exiting the tunnel. 4. Delay model - After entering the tunnel, the lights be turned on with a delay of 3 seconds and automatically turned off after exiting the tunnel. 5. Battery protection - The automatic headlights start with delay after power is turned on to avoid power grabbing and protect the battery. Fitment:For Focus 2 3 mk2 mk3 2005 Installation:Directly use it without any setting after installation. Used for: 1. Night driving 2. Driving on a rainy day 3. Smoggy weather 4. Underground Parking lot 5. Tunnel 6. Road with unclear light Learn to turn on the light value - You