The RCS-9010 utilize the most technologically advanced and precise refrigeratn meter available today with features that can not be found anywhere else.It is ideal for HVAC and refrigeration service.including critical charging of small refrigeraion systems.With the RCS-9010 you can measure weight in both metric and english unit. The RCS-9010 is programmable,and has a built-in alarm to indicate a programmed theshold has been exceeded.