Portable Conductivity Ph Test Stick Water Quality Test Pen

TECHNICAL SPECIFICATION: Measuring range: 4一52CF;0.4一5.2EC 280一3640ppm（EC×700） 200一2600ppm（ECx500） Resolution：1CF;0.1EC;70ppm700；50ppm 500 Accuracy:±4％ Of reading OperatingTemperature:0℃～50℃（32-122℉） AutomaticTernperatureCompensation:0℃～50℃ Powersource:3x1.5v (AA batteries) Dimensions:415mm×25mm Autosense:auto on and auto OFF