Waterproof Grade IP68 - High Stability, Low Power Consumption, and High Integration Level Three-point Calibration Data - Transmitter internal use of axial capacitance filtering, 100M resistor to increase the impedance to enhance stability. Bulb - special thickened bulb, new upgradedstyle more accurate, more beautiful Area of Application - This Device is Suitable for Online Monitoring in the Fields of Chemical Industry, Printing and Dyeing,Etc. Measurement Parameters:pH, EC, Temperature Measurement range: pH: 0 to 14pH EC:0-2000S/cm Temperature:0-60 Accuracy:0.03pH; 1.5%; 0.2 Resolution:0.01pH; 0.1uS/cm; 0.1 Output signal:RS485(standard Modbus-RTU protocol, device default address:01) Supply voltage:7-24VDC Working environment:Temperature:0-60;Humidity:less than equal 100%RH Type:D:Steels with Display Colour:Blue Material:Plastic+Metal Package Contents: 1 * Industrial Sewage Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.