Indoor P4 LED Display Module Specification Pixel Pixel  Pitch 4 mm Pixel Configure 1R1G1B SMD 3IN1 Pixel Density 62,500  Pixel/m² LED Lamp LED Type SMD 2121 LED Lamp Nation Star /King light Chip Brand EPISTAR Wavelength & Brightness Red:620-625nm;174-230mcd Green:520-525nm;680-900mcd Blue:470-475nm;130-160mcd Module Module Dimension 256 mm(W)x128 mm(H) Module Resolution 64 Pixel * 32 Pixel   Scanning Method 1/16 S   Drive IC 5020 /5124 /5153 / 2037 /2038 /2038S/2053 Refresh Rate >1920HZ Viewing Angle Horizontal : 140 °     Vertical: 140 ° Brightness 800-1300 cd/m² Best Viewing Distance 4-50 m LED Life 100,000 Hours Maximum Power 600w/m²  Average Power 300w/m² Input Voltage 220V/110V ±10%  Operation Environment Temperature: -20°C~60°C; Humidity: 10%~95% Protection Grade IP 43 LED Module Weight 0.25 kg/piece