... PMMA panel,the light is very soft.Features-Energy-saving,high birghtness,no infrared rays,no ulrtaviolet radiation,no thermal ... effect-Long lifespan-Less heat-High efficiency consistant current driver,with heat protectionsystem,can work ... unstable voltage-Instand start,no flicker,no buzz-Special designed circuit,all the leds workseparately,one failed led will not ...