... Compensation 4 Hold Function,Power Monitor Boke5 series Portable Conductivity/TDS/Salinity/Temp Meter Parameter: ModelBoke520Boke53Boke540Conductivity Range0 ... ConstantK=0.1, 1, 10 (Selectable) Memory64 Data sets with Date/Time stampingOutputUSB Communication InterfacePower Requirements9V/800mA ... display, the user can easily view and record data.Power Monitor: During using, the power chip will ...