-as a multi-functional smart down light, it has the functions of general lighting and emergency lighting. When the main supply is normal, it can be used as daily lighting and the light-on/light-off is controlled by the switch; when the main supply is cut or the voltage of the main supply is lower than the working voltage of the product driver, the internal battery of the luminaire can provide more than 120min of emergency lighting. -the high-lumen smd light source technology and the aluminum heat dissipation structure (bottom ventilation) prevent decaying caused by the heat. -high luminance output. -energy saving and environment friendly. -external driver with terminal connect wire for easy assembling and dismantling during replacement. -luminaire housing fireproofing grade vo.