The solar street light controller PCB is an energy-saving control core for solar-powered street lighting, optimized for outdoor use. It withstands extreme temperatures, humidity, and dust, integrating solar charging control, battery protection, light sensing, and dimming circuits. It automatically charges the battery during the day using solar energy, detects ambient light intensity to turn on/off the light automatically at dusk/dawn, and adjusts brightness according to needs. With overcharge, over-discharge, and short-circuit protection, it extends battery and lamp lifespan, suitable for urban roads, rural areas, parks, and parking lots, providing reliable and energy-saving outdoor lighting.