1. ORP/PH controller, uses ABS material, 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. 6. Item Type: Water Quality Controller 7. Measuring Range: 8. PH: 0.0PH 9. ORP: -1999-1999MV 10. Resolution: 11. PH: 0.01PH 12. ORP: 1mv 13. Accuracy: 14. PH: (0.1%+0.02PH) 15. ORP: 5mv 16. Set Control Range: 17. PH: 3.5-10.50PH 18. ORP: -500-500mv or 0-1000mv 19. Voltage: AC230V10%50/60Hz 20. Plug Type: EU Plug, it applies to Indonesia, Germany, France, Spain, Italy and so on 21. Material: ABS+electronic components 22. colour: blue 23. Package Contents: 24. 1 x Water Quality Controller 25. 2 x Test Head 26. 2 x Silicone Fixed Tool 27. 1 x Accessory Kit 28. 1 x Manual 29. Only the above package content, other products are not included. 30. Note: Light 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.