Digital TDS Meter 0-1999PPM Water Quality Monitor Bidirectional Tester High Level Probe 1mg/L PPM Accuracy +/-2%Features:Wide Screen Digital Display DesignSwitchable TDS Value Comparison of Two LiquidsCan be connected to a water pipe or water dispenser to measure two parameters of influent and sewageThis product can be wall-mounted or embedded, easy to install and operate, and is an auxiliary instrument for many manufacturers of water dispenser. Specifications:Automatic temperature compensation: Oc - 50cResolution 1mg/L (ppm) battery type: 4*1.5V(AG13) (not included!)Dimensions (mm):60x55X23Weight 98g, You can mention them: 2% fsMeasuring range: 0 - 1999mg/L (ppm)Resolution: 1mg/L(ppm)Note:Item color displayed in photos may be showing slightly different when showing on computer monitor since monitors are not calibrated same. Please allow 1-3mm slight deviation due to manual measurement. Thank you!Package Included:1 Set TDS Meter