Two sides are lined with LED's to grant optimal illumination. High light output at a reduced energy consumption of up to 50%. Over 36'000 hours life expectancy. Wide angle of deflection with even light distribution. No start-up time, no flickering, no humming. High efficiency (95%) constant current driver with built in overheat protection that remains stable at a wide range of input voltages. Independent LED circuit prevents complete blackout in case an LED fails. Environmentally friendly, mercury and lead free. Causes no electromagnetic interference.