LED Footwell LightS With Intelligent Dimming:

Welcome Mode: the light increases to 100% when unlocking or opening the door

Daytime Mode: the light automatically dims to 70% when the vehicle starts and increases to 100% when opening the door. 
Night Mode: the light automatically dims to 30% when opening the light bulbs or headlights, automatically increase to 100% brightness when stalling or opening the door, and there are 5 seconds delay to get off the light when locking the car!