... : membrane keyboard17.Display: 10.4” color LCD18.Printer: built-in thermal printer, paper width: 110mm19.Environmental temperature: 10°C~ ... switch, monochromator, flowcell, temperature-control system, sample-filling system, printer, microcomputer system, color LCD, keyboard.Features:(1) Plane holographic diffraction ... RS-232 interface to send data to computer. Big Screen Semi-auto Biochemistry Analyzer