... data, but can also read a power signal ? It has to open a cashdrawer with a power signal) BTW : I have no background on technics... MENUITEM "DrawerOpen" ACTION Drawer('Open Drawer','COM1',4800,chr(27)+chr(112)+chr(0)+chr(7)+chr(35),'','') function Drawer(x0,x1,x2,x3,x4,x5) local ...