RS-232 full-duplex interface GLP/GMP printout protocol Backlit LCD display isoCAL calibration Reprotest (ME & SE series) SQ min (ME & SE series) Configured printout (ME & SE) Number keys Alpha keys (ME & SE) Applications on board: counting, checkweighing, percent weighing, unit toggle, net total, back weighing SE additional features Motorized draft chamber with memory allows access from front or sides; draft chamber is easily removed for cleaning or retrieval of dropped samples; equipped with EUREKA† SURE§ Additional applications on board: animal weighing, formulation, statistics, calculation, timer, density determination, memory (300)Additional printer port; user