Detailed Product Description LED Sign, LED display (Leading Supplies)Indoor - pitch 3.5mm, 4mm, 4.2mm, 4.4mm, 6mm, 7.62mm, 8mm, 10mm, 12mm, etcOutdoor - pitch 10mm, 12.5mm, 14mm, 16mm, 20mm, 22mm, 25mm, 28mm, etc Project Information Pitch4.2mm, the smallest pitch for commercia full color LED display application until 2005 Yaham Patent Control Systemenergy saving design that applicated in various ...