... data and command, more secure for data and command transfer;• User defined barcode as per customer request, readable only by specified ... 54PhysicalDimensions67 x 52 x 30 mm/ 2.64 x 2.05 x 1.18 in (d x w x h)Weight ... Class 2, GB7247.1-2001Enclosed itemsCable(USB,RS232/TTL,RS485), User Guide, DC power supply (RS232/TTL,RS485) WNL-2000 Stationary Laser ...