The solar street lamp is easy to install, and money saving . It does not require additional hard-wire links, and can be mounted on a wall or pole. The diameter of the support rod ranges from 1 to 3 inches. And it saving installation costs and maintenance costs, electricity bills as well. Attention : Please turn on the solar outdoor light before installation.【HIGH EFFICIENCY & LONG LIFETIME POLYSILICON SOLAR PANELS】Street light outdoor use polycrystalline silicon photovoltaic panels with the high photoelectric conversion efficiency. Solar light outdoor built-in 20000mAh large capacity lithium battery, to be fully charged in only 6-8 hours, providing a long working time about 18-20 hours in bright mode.【BUILT-IN MOTION SENSOR FOR LARGE ANGLE AND AREA】LED solar gutter lights cover a180°angle, 1610sq.ft area. Solar motion sensor light outdoor turn 100% brightness mode in 2 seconds when motion is detected. It reverts back to 30% energy saving mode again if people out of the detected area.【IP65 WATERPROOF】Solar gutter lights IP65 waterproof grade, rainproof, lightning protection and dustproof, ABS plastic anti-UV lamp body and new inner design housing with individual sealed boxes for batteries, controller and outer sealed rubber ring protect from water leaking.【NOTE】Before the first use, please turn on the street lamp switch and charge it for 6-8 hours under direct sunlight.