142.3 Components and Functions• Reading confirmation LEDIlluminates in green when the BHT has success-fully read the bar codes.• Hand strapPut your hand through thisstrap to prevent you fromdropping the BHT acciden-tally.• Liquid crystal display(LCD)Shows the characters andgraphic patterns.• Connector coverInside this cover isthe direct-connectinterface port.• M1 and M2 keysPress either of these keys to start bar-code reading.(The trigger switch function is assigned to both thesekeys by default.)• Battery cover lockUse this lock to lock/unlock the battery cover.• Battery coverRemove this cover to replace batteries.• Optical interfaceportThis is an infraredport to exchangedata/programs withthe host computer orthe optical communi-cations unit CU-6000.• Bar-codereadingwindow• ClipAllows you to clip the BHT onyour pocket.
