Description 1. The WiFi online pH ORP controller allows you to real time monitor the pH and ORP via your smartphone on the Tuya APP(for free), it is compatible with ios and Android system, perfect for 24 hours online monitoring. 2. Widely used to test the pH / Temperature / ORP (Oxidation Reduction Potential) of water. 3. With relay output power socket, you can control the pH ORP value according to your requirements. 4. You can replace the fuse easily and fast with external replacement. Detachable and replaceable pH and ORP electrodes. 5. With plug for air outlet stone, generators, oxygen pumps, carbon dioxide regulators, solenoid valves and other ORP pH . 6. Easy calibration of pH/ORP with just a mini-screwdriver and automatic temperature compensation. 7. Clear LCD with backlight, 3 results displayed simultaneously. Easy to use and instant display of results. 8. Test temperature in / (switchable units) and can online monitor and control ORP pH for a long time. 9. Apply in water sources, soil-free growing, aquarium, hydroponics, laboratory, spas, environment water, swimming pools, water purification , etc. 10. APP Language : English, French, , Russian, Japanese, Korean, Spanish, , (Only supports and English in offline state) APP Name: Tuya OS Requirement: Compatible with iOS and Android system Range: pH: 0.00~14.00pH ORP: -2000~2000mV Temperature: 0~50 (32~122) Resolution: pH: 0.01pH ORP: 1mV Temperature: 0.1(0.2) Accuracy: pH: 0.1pH ORP: 5mV Temperature: 1.0 Alarm Setting Range: pH: 0.00~14.00pH ORP: -2000~2000mV Colour:blue+white Material: ABS Plug Type: US Plug, it applies to Canada, , Mexico, Thailand, Taiwan, the , the Philippines and so on. Package Contents: 1 x 3 in 1 Water Quality Tester 1 x pH Electrode 1 x ORP Electrode 1 x Temperature Electrode 2 x Suction Cup 4 x Screw 4 x Anchor 1 x Manual (English) Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.