It uses light control switch design and will automatically turn on in dim or dark environment, and automatically turn off in bright environment; It really saves energy and lasts longer time; It uses body sensor and the sensor angle is 90 degrees, sensor range is 5m; 3 LEDs turn on when people in sensor range, and after people leave the sensor range, it will get into energy-saving mode and keep 1 LED light; Built-in LiFePO4 battery, 80'C high temperature resistance, and has longer lifespan; Widely used in courtyard, garden, outer wall, corridor, balcony, etc.