... display 2.RS232 data interface 3.Firm,Fast,Reliable Weight Scale Characteristics:1, Firm,Fast,Reliable2, Easy to carry ... in the full range.7, Applications: percentage weighing, net weight, the sum formula calculations, dynamic weighing, counting, unit conversion ... diameterExternal diameterPowerOutputinterfaceYP5002500g10mg220*260mm223*330*80mmAC220V50HzRS232C(if you need) Weight Scale Digital Balance