features of high efficiency, high quality and high utility. Features: HARD MENTAL SHELL: Oxidized aluminum alloy shell with sand blasting process. It possesses 10 years lifespan for outdoor use. RADAR SENSOR: Gives a highly accurate result rather than which influenced by temperature. HIGH PERFORMANCE BATTERY: Lithium iron phosphate battery for 6 years working time without being changed. HIGHLIGHT LED: The brightness of the light is equivalent to 100W incandescent lamp. EXTENSION ROD: Promote the range of lighting and the effect of absorbing the sunlight.