Product Description: Wide-screen digital display design Can be connected to water pipes or water dispensers to measure two parameters: inlet and outlet water. It allows switching between and comparing the TDS values of two liquids. This product can be wall-mounted or embedded for easy installation and operation, making it a supporting instrument for many water dispenser manufacturers. Main Technical Specifications: Measurement Range: 0~1999 mg/L (ppm) Accuracy: ±2% F.S Resolution: 1 mg/L (ppm)