Weighing, counting and check-weighing large 1" LED display easy to read. Stainless steel housing and water-proof tie-in automatic zero tracking, audible alarm for pre-set weights, automatic tare, and an accumulation facility that allows the individual weights to be stored and recalled as an accumulated total. SPECIFICATIONS Model: HF-S Housing: Stainless steel Zero range: 0mV~ 8mV Max input : 15mV ADC: £ -& Delta; External Resolution: 1/ 30000 Interface RS-232 Output Optional Stabilisation Time 1 Seconds typical Power supply: External AC adapter, 9~ 12V 800mA or 220~ 240VAC 50/ 60Hz and By built in Rechargeable Battery 6V4ah. Calibration: Automatic External Display: 6 digits 1" LED digital display. Load cell drive voltage: Max 5V/ 150mA Load cells: Up to four 350 ohms cells Others: Real-time clock and units conversion