Light Sensor: After turning on the string lights, it is not necessary to turn it off and put it outside the sun. (The solar panel only charge when the switch is on). Solar String Light turns on automatically when it is dark and turns off automatically during the day. Quality Material: This luminous 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 power, energy saving and environmental protection. Charged for 6-8 hours in the sun, the light will be bright all night long, and the rainy day will work between 4-6 hours. Wide Applications: Our solar string lights can decorate outdoor patio, garden, lawn, landscape, yard under porch, outdoor Christmas tree, wedding, party, wall, home 'grass, adds the perfect atmosphere to your place in seconds. Service & Note: The