Impact Dot Matrix Printer with a Full Range of Statistical Functions: Weight Data, Total Weight Data, Counting Data, Total Counting Data, Number of Operations, Standard Deviation, Chart, Date and Time. Interval Printing: 5, 10 30 Second or 1,5,10 or 30 Minute. Charting Selectable to Show Change in Weight, Interval Time, Start/Stop Time. Clock, Calendar and Pre-Set Functions are Stored in Non-Volatile Memory. Accepts RS-232 and Current Loop Input from Most AND Electronic Balances/ Scales and Weight Indicators. **RS-232 INTERFACE CABLE PURCHASED SEPARATE. SEE 8121 OPTIONS AND ACCESSORIES**