Feature:   1. Removable Electrode: The water quality monitor is equipped with removable electrode, and one electrode can measure 7 values, PH, ORP, EC, PPM, CF, humidity, temperature.     2. Wifi Function: Wifi connection, stable data transmission, downloading applications to view current and historical data anomalies, high and low data alarms on mobile phones, etc.     3. For Tuya APP: The for Tuya application program can view in real time, record data for a long time, facilitate comparison and analysis, and develop solutions.     4. Premium ABS: This meter is made of premium ABS that is durable but please note that it is not waterproof. Please do not let the tester get water or damp during use, otherwise the tester may not work normally.     5. Applications: This water quality tester is applicable to aquaculture, aquarium, fish pond, hydroponics, drinking water, laboratory, water treatment.             Specification:               Item Type: Water Quality Monitor  Material: ABS  Gross Weight: 608g/21.4oz  Range:  EC:0.00-19.99mS/cm, 20.1-200.0mS/cm  Total Dissolved Solids: 0-9990ppm, 10.1-100.0ppt  CF: 0.1-199.9CF  PH Value: 0.01-14.00pH  ORP:-1200mV-+1200mV  Air Humidity: 10percenst RH-99percenst RH  Temperature: 0.1& 8451;-60.0& 8451;, 32.1& 8457;-140.0& 8457;  Calibration:  EC TDS: 1413pS/cm, 12.88mS/cm, 111.8mS/cm  PH Value: 6.86/4.00/9.18 or 7.00/4.00/10.01  RS485 3178: With 485 module  Function: Supporting for Tuya APP WiFi function  Multi Parameter Seven in One Measurement: PH value, conductivity, TDS, humidity, CF, temperature; Automatic calibration is supported.  Applications: Aquaculture, aquarium, fish pond, hydroponics, drinking water, laboratory, water treatment.