sound contronller (Advertisement band: indoor colored, flashing ban)

E-Panel is the short for Electron Luminescent. It's new lighting. Its lighting theory is that the fluorescent powder is coated between two layer electrodes. When the electricity is connected to the two layer electrodes, the electric field will activate electron's energy level's transition and thus generates the light. Our E-Panel brightness will increased by 150% compare with the traditional EL sheet.
?Cool light source: E-Panel doesn't emit heat and thus avoids the problem caused by heat
  accumulation.
?Flexibility: E-Panel can be curled into any size, which is very convenient for the products' design .
?Small volume: E-Panel can be as thin as 0.6mm which is specially fit for the locations of strict
  requirement.
?Rich colors: With different formula, it can emit lights of different colors like blue, blue green, green,
 orange, white,
?Long-life: Its life can last over 10,000 hours in good condition.
E-Panel Applications
Advertisement band: indoor colored, flashing band, badge and company's logo.
Informational Signs: entrance and exit signs, road sings, floor signs, fire apparatus signs, warning signs, vehicle number