Probably the most common type of Christmas tree lights, these lights are suitable for both indoor and outdoor use. For example, our 1000 Multi-Action Warm White LED TreeBright Christmas Lights come up an in-built timer and automatically come on at the same time every day with an 8 hour on/16 hour off timer function or maybe you prefer a little more colour with our multi-coloured Pearl Berry Multi-Action LED Christmas Lights. View our full range of string Christmas lights here