Power:ElectronicUsage:PEN TYPE PH TESTERMeasuring range:0.00~14.00pHResolution:0.01pHAccuracy:±0.1pHCalibration:2pointPower:4*1.5v (LR44)Auto shut-off:Approx. 4minutesDimension:175*41*23mmwebsite:-supply.comURL:.en.alibaba.comcategory:ph meters Show More