Model T3819(P)Power AC：～220V、50HzDC：Built-in rechargeable battery （6V、5Ah） Display 7 bit 0.8 inch LED display Keyboard Push-button keyboard ( 10 figure key and 14 functional key) Load cell 4 driven 350Ω load cells Communication RS-232 serial output ( RS-485 interface available).Baud rate:2400 available Printer Connected with the standard printer （PANASONIC 1121，EPSON-LX800，TM-800）Panel type micro printer (TPμP-16), desk type micro printer Main Features 1.Operated by AC & DC2. Battery voltage display: auto shut down when lower voltage3. Keyboard calibration4. Real time clock that can work when the power is off5. Storage of 512 numbers of truck and tare and 512 weighing records6. Chinese and English printing format7. 1 to 4 Chinese bills standard printing, record printing by hand and automatically, total printing8. three kinds of standard bills printing 9.Statistics printing (collection statistics, daily report statistics, truck number statistics and goods number statistics) 10. 1 to 4 Chinese bills micro printing, record printing by hand and automatically, total printing11 Zero tracking range and zero-catching or non-zero0-catching when turning on 12. Selection of stability or zero when printing13. Tare input14. Selections of division15. setting and reviewing date, time, unit price and goods number16. Accumulation of times, weight and amount17. Reviewing and clearing the accumulated times, weight and amount External Dimension 310mm?190mm?140mm PackingDimension 370mm X 270mm X 285mmGross Weight 3.3kg Net Weight 2.4kg