The Lucide Twilight Sensor LED Filament bulb is the solution for anyone who wants to convert their current beloved outdoor lamp to a version with day/night switching. The bulb is fitted with a built-in light-sensor switch. This switch turns the lamp on automatically in the evening and turns it off again in the morning. Your outdoor lamp or garden light fixture also has a unique look due to the amber-coloured glass and the visible spiral filament.