P4 outdoor display refers to an LED screen with a 4mm pixel pitch, specifically designed for outdoor environments. The pixel pitch is the distance between the centers of adjacent pixels, and a P4 display has a 4mm spacing, which provides a balance between image quality and cost for medium to large-scale outdoor applications. Here's an overview of its features and common uses

Pixel Pitch:
P4 means a 4mm pixel pitch, meaning the pixels are spaced 4mm apart.
This provides a lower resolution than smaller pixel pitch displays (like P3, P2.5), but still delivers high-quality images at moderate viewing distances