... sending card box Linsn, DBStar control system brightness control Single sending card box, Linsn, DBStar control system (Driver)Description:Driver ... panel,RS 232 is used for cascadeScreen brightness control:16-levels adjustment on the front panelLED indicators ... back panel:2 power(red),1 signal A present(green)Control software:controller softwareSpecifications:Power consumption:65 wattsInput ...