["brand new and high quality\n\nFeatures:\nThis 2-in-1 WIFI pH & ORP controller and monitor simultaneously measures and displays both pH value and redox value (ORP). It comes with 2 BNC electrodes (pH and redox) and 2 output power sockets. Both electrodes are detachable, they can be replaced easily at any for time. As for the relay output power sockets, you can plug in your own 220V device to it, e.g. air outlet stone, O3 ozoniser, oxygen pump, CO2-regulator, electromagnetic v-alve and other ORP & pH control devices. Simply set the desired Hi/ Low pH/redox values in the controller. It will turn on your device if the currently measured pH or Redox value is lower than your set value, and it will turn off your device if the measured value is higher than your set value.\nApplications & Usage:\nFish hatchery, wine production, swimming pool (bath), laboratories, water conditioning, schools & colleges, floristics, for analysis of fluids (ph-value), for ponds, various industrial application, Pisciculture, Koi, Kois, Boilere, Pond, Pool, Spa, swimming pools, pool, analysis of liquids, orchids breed, breeder, hemp, grow, etc.The suitable way for you to keep an eye on the different water parameters in your for tank! A MUST to have a perfect way to automate & regulate the control devices in your aquarium to ELIMINATES FATALITY and MAINTAIN a HEALTHY WATER SYSTEM!\n\nspecification:\nModel :PH-803W\nMeasuring range :PH: 0.0PH\n ORP: -1999-1999MV\nResolution PH: 0.01PH\n ORP: 1mv\nAccuracy PH: ±(0.1%+0.02PH)\n ORP: ±5mv\nSetting control range PH: 3.5~10.50PH\n ORP: -500-500mv or 0-1000mv\nUse environment: temperature: 0-50℃, humidity <95%\nDisplay: 4 is LED display\nPower supply: 220v±10% 50Hz±2%\nSize: 160mmX102mmX40mm\nNote:\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1set Water Quality Tester(as the picture shows，Without batteries）"]