Brightness:7500 cd/sqm (outdoor);viewing angle:120 horizontal, 60 vertical;driver mode:1/4 constant current;working temp:-20c~+60c;working hum:10%~90% rh;microchip:epistar&silan;led:p10 dip;pixel pitch:10 mm;voltage:ac100~240v;power consumption:20w--40w;control mode:rs232, rs485, lan, remote, u disk and wireless;cabinet:ip65 waterproof with cold rolled steel;composing parts:led display, software, data line and power adapter;multi language:english/chinese/greek and more advertising language;format:bmp, jpeg, gif picture format, even gif animation display Brightness adjustment:manual and automatic by time period;on and off mode:manual/automatic powered;auxiliary function 1:self-contained clock and spare battery not paused once powered off;auxiliary function 2:can extend temperature and hygrometer display (need extra charge);computer operation request: Win xp or vista, win 7.