About Product:Light Source: LED battery panel: monocrystalline silicon or polycrystalline silicon battery panel storage battery: lithium battery controller: microcomputer intelligent controller, anti-overcharge, over-discharge, output short circuit protection and automatic control of the use environment of turning on and off lights according to light darkness:-30 ° ~ +60 ° working Time: 6m-12m height according to the specific configuration of street lamp