How to control the switch of solar street light

How do solar street lights control the switch? The solar street lights installed by the lighting industry all use light-controlled and time-controlled intelligent waterproof controllers. With this device, after installing the solar street lights, we can manually control the switching time of the street lights. The solar street light controller is the core device in the street light. It is connected to the solar panel, battery, and the light source of the lighting. When the controller senses that the voltage of the solar panel drops to a set position, it will drive the solar street light. Source to work. When the time we set (assuming 8 hours) arrives, it turns off the lighting source. In addition, the solar controller has many functions, for example, it can prevent the battery from overcharging and over-discharging and avoid battery damage.