The Td1100 Readers are available with the option of two different sizes of reading windows: 6.5 cm/2.6" (td1100-65) for reading standard bar codes or 9.0 cm/3.5" (td1100-90) for reading wide bar codes. Both options are provided with a complete all-in-one multi-interface solution including RS-232, USB and keyboard wedge (Td1130) and with USB or RS-232/keyboard wedge interfaces (Td1120/Td1170). all models include the new innovative 'read-through' holder.