Timbangan Analitik  High precision weighing in affordable budget Common　Specification Tare Zero to Full weighing range Span adjustment AB･････Manual operation Span Adjustment withexternal calibration weight AB-R･････Semi-automatic Span Adjustment withbuilt-in calibration weight Over error "o-Err" showed when Full weight range + 9 more digits over Temperature and humidity range 5 ～ 35℃、Up to 80ï¼… rh(without the dew condensation) Power source AC adapter Input 100-230VAC / Output 6VDC Output RS232C(D-Sub9Pin)