Feature: 1. ORP/PH controller, uses high‑quality ABS material, durable, corrosion‑resistant and long service life. 2. Can measure PH/ORP, different water quality and ion oxidation degree, help remove harmful substances in surrounding water. 3. High measurement accuracy, quick response, stable data, suitable for aquarium, hydroponic plants, pools, and hot springs. 4. Set up real‑time monitoring through WIFI networks, can use your mobile phone to check valid data status and water quality changes. 5. Adopts wall‑mounted designed, convenient installation and operation, stable performance, and helps to detect water quality. Specification: Condition: Brand New Item Type: Water Quality Controller Material: ABS Measuring Range: PH: 0.0PH ORP: -1999-1999MV Resolution: PH: 0.01PH ORP: 1mv Accuracy: PH: ±(0.1%+0.02PH) ORP: ±5mv Set Control Range: PH: 3.5-10.50PH ORP: -500-500mv or 0-1000mv Plug: EU Plug Voltage: AC230V±10%50/60Hz Weight: Approx. 1355g / 47.8oz Size: Approx. 160x102mm / 6.3x4.0in. Package List: 1 x Water Quality Controller2 x Test Head2 x Silicone Fixed Tool1 x Accessory Kit1 x Manual Note: 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.