led dot matrix
Paterns : 5x7 dots/5x8 dots/8x8 dots/16x16 dots
Dot shape: round/ square types
Single dot size: from 1.7mm to 10mm
Emited colors: red/amber/green (pure green/yellow green)/blue/white/yellow
Lens color: gray/black
Polarity: common cathode/anode
Epoxy color: milky white/red/blue/green/yellow