Light Sensor: After turning on the light string, there is no need to turn it off and put it outside the sun.(the solar panel does not charge only when the switch is turned on).The Solar Star String Light automatically turns on when it is dark and automatically turns off during the day. Quality Material: This bright Christmas decoration is made of dark green PVC wire and waterproof solar chip. IP66 waterproof class can withstand high, low temperature and oxidation resistance. You can't worry about safety and fire resistance. WorkingLong working time: 23ft 50 LED string lights, solar energy, energy saving and environmental protection . Charged for 6-8 hours in the sun, the light will be bright all night and rainy day will work between 4-6 hours. Wide Applications: our solar string lights can decorate outdoor patio, garden , lawn, landscape, porch yard, outdoor Christmas tree, wedding, party, wall, grass, adds perfect atmosphere to your place in seconds. li> Service & Note: The