... degradation. [b]Aluminium alloy die cast sheel, good strength,high quality heat dissipation.anti corrosion and baking varnish surface,can be ... 85V~265VAC,constant voltage constant current output,can start up at once,no flicker,lightning protection,PFC function available.[ ... very carefully before installation.2,Please install the lamp follow up the installation procedure, make sure the screw has been ...