NSTALLATION SPECIFICATIONS KEYS, DISPLAY AND CONNECTIONS GETTING STARTED 1/40000 High Σ-Δ A/D conversion technology 7 brightness of backlight mode selectable; 3 Visible battery volume; Visible rate of Gross Weight to Capacity; 6 bits LCD Display, 21 status indications;4 Units: Kg ,g, lb, oz 2 RS232 : can connect to Remote display , PC or Printer separately Interface RS232, 1200/2400/4800/9600/ ...