... ourselves to meet more customers’ demands.Programmable Refrigerant Charging Scale RCS-9020/RCS-9030 are programmable, and has a built-in alarm ... to indicate a programmed threshold has been exceeded.RCS-9020 0-100kG range of weight, units: kg, lbs, +-0 ... .5% of reading.RCS-9030 0-100KG range of weight, units: kg, lbs, oz ...