... Specifications:Principle:Electrical resistance for counting, hemiglobincyanide method and SFT method for hemoglobinParameters:3-part differential ... customizationInterface: 2 × USB, 1 × parallel (for external printer), 1 × VGA (for external monitor), 2 × PS/2, 2 ... × RS-232(for network);PrintoutI Built-in thermal recorder, optional external printer, eight report formatsWorkingEnvironment Temperature ...