... advertising billboard, stadium LED signs, sports LED signage, rental video display, mobile digital LED display, stage & bar electronic sign, DOT matrix LED display, etc. 1. ... , contrast, saturation, chroma can be adjusted by manual and sensor, whose scope is 256 grade. (3) Show all kinds ... , contrast, saturation, chroma can be adjusted by manual and sensor, whose scope is 256 grade. (3) Show all kinds ...