Stainless Steel Multi-Function Indicator The Rinstrum R321 is identical to the R320, but is fitted with a a 2mm thick IP65 stainless steel case. This is a perfect unit for exposed or aggressive environments. It is fitted with a swivel stand/wall-mount-bracket. The R321 has superb stability and performance including Trade Approval with OIML and NSC to 4,000 divisions. 5 point linearising is standard. The programmable function key can be configured for any one of the built-in functions (Counting, Manual Hold, Peak Hold, Live Weight Totalising). The built-in 15kV protected RS232 serial port can perform almost any communications role. It has a built-in opto-isolated Rin-LINK data coupling for safe PC programming. Two isolated transistor setpiont outputs provide for basic weight-control or level-control functions. The unit can be battery powered for portable or isolated applications, but does not accept internal batteries. Key Features > Trade to 4,000 divisions > 20mm LCD display > Bright LED Backlighting > Special high-level functions > IP65 stainless steel housing. > rin-LINK connector