... select the programs, adjust time, and brightness,etc. Colorfull color, dual color, and single colorPixel configurationStatic/ max H 64 pixels x ... , clock, temperature, and messageRefresh frequency100 Hz /secondGrey level256 levels for R, G, BMemory capability4M ByteWorking voltageDC 5V±0.2V ( control ... (accuracy ±1°C),10~80%RHIP levelIP 65Technicial specification Full Color LED Pharmacy Cross Signs