... solar panels induction to the light (daytime), the lamp string light will be off automatically; When solar panels induction the ... certain degree (at night), the lamp string is light automaticallyWorking condition: -20°C ~ +70 °COptional LED color: white, blue, warm white, ... trees, mail box, window sills and planters.Widely used in Christmas decoration and in other festivals, such as party, square, ...