Introduction
This user manual provides detailed instructions for the operation, maintenance, and troubleshooting of your WiFi Tuya Smart Water Quality Tester. Please read this manual thoroughly before using the device to ensure proper functionality and longevity.
Product Overview
The ETRYOX WiFi Tuya Smart Water Quality Tester is a multi-parameter device designed for comprehensive water quality analysis. It measures PH, ORP, EC, TDS, SALT, S.G, TEMP, and CF, providing real-time data and logging capabilities via the Tuya Smart APP.

Figure 1: Front view of the WiFi Tuya Smart Water Quality Tester with connected probes and a smartphone displaying the Tuya Smart app interface.
Key Features:
- Multi-Parameter Measurement: Measures PH, ORP, EC, TDS, SALT, S.G, TEMP, and CF.
- WiFi Connectivity: Connects to the Tuya Smart APP for real-time monitoring and data logging.
- Data Export Function: Supports exporting data to email for easy analysis.
- High Accuracy: Provides precise measurements for various water parameters.
- Wide Application: Suitable for aquariums, aquaculture, drinking water, hydroponics, laboratories, spas, and swimming pools.
- Easy Operation: Simple immersion of electrodes provides instant readings on the LCD screen and app.
Package Contents
- WiFi Tuya Smart Water Quality Tester Unit
- PH Electrode
- ORP Electrode
- EC/TDS/SALT/S.G/CF Electrode
- Temperature Probe
- Power Adapter
- Calibration Solutions (PH 4.01, PH 6.86, PH 9.18, 1413 us/cm, 12.88 ms/cm)
- User Manual (this document)

Figure 2: Included calibration powders for pH (4.01, 6.86, 9.18) and conductivity solutions (1413 us/cm, 12.88 ms/cm).
Setup Guide
1. Device Assembly:
- Unpack all components from the packaging.
- Connect the PH electrode to the designated PH port on the main unit.
- Connect the ORP electrode to the designated ORP port.
- Connect the EC/TDS/SALT/S.G/CF electrode to its respective port.
- Connect the temperature probe to the TEMP port.
- Plug the power adapter into the device and then into a standard electrical outlet.
2. App Installation and Connection:
- Download the "Tuya Smart" app from your smartphone's app store (iOS or Android).
- Register or log in to your Tuya Smart account.
- Ensure your device is powered on and in pairing mode (refer to the device's LED indicator for status).
- In the Tuya Smart app, tap "+" to add a new device.
- Follow the on-screen instructions to connect the water quality tester to your home WiFi network.
- Once connected, the device will appear in your app, allowing real-time monitoring.

Figure 3: Illustration of the WiFi connection process and data transfer from the water quality tester to the Tuya Smart mobile application.
Operating Instructions
1. Calibration:
Regular calibration is crucial for accurate readings. Refer to the specific calibration procedures for each parameter (PH, ORP, EC/TDS/SALT/S.G/CF) in the Tuya Smart app or the device's physical buttons.
- PH Calibration: Use the provided PH 4.01, 6.86, and 9.18 buffer solutions. Follow the app's guided calibration steps.
- EC/TDS Calibration: Use the provided 1413 us/cm and 12.88 ms/cm conductivity solutions.
- ORP Calibration: ORP calibration typically involves a single point calibration with a known ORP solution.
2. Taking Measurements:
- Ensure all electrodes are properly connected and clean.
- Immerse the electrodes into the water sample you wish to test. Ensure the sensing parts of all probes are fully submerged.
- Wait a few seconds for the readings to stabilize on the device's LCD screen and in the Tuya Smart app.
- The app will display real-time data for PH, ORP, TDS, EC, SALT, S.G, TEMP, and CF.

Figure 4: The water quality tester's PH probe submerged in a glass of water, showing real-time PH data on the device and app, along with a PH scale for reference.

Figure 5: The water quality tester's ORP probe submerged in a glass of water, displaying ORP values on the device and app, with reference values for drinking water, mariculture, and swimming pools.
3. Data Logging and Export:
- The Tuya Smart app automatically logs historical data.
- You can view daily, weekly, and monthly data trends within the app.
- To export data, navigate to the data history section in the app and select the export option (usually to email).
Maintenance
1. Electrode Cleaning:
- After each use, rinse the electrodes thoroughly with distilled or deionized water to prevent contamination and buildup.
- For stubborn deposits, gently clean the electrodes with a soft brush or cotton swab and a mild cleaning solution recommended for probes. Avoid abrasive materials.
2. Electrode Storage:
- Always store PH and ORP electrodes in their respective storage solutions or a 3M KCl solution to keep the sensing membrane hydrated. Do not store in distilled water.
- Ensure the protective caps are securely placed on the electrodes when not in use.
3. General Care:
- Keep the main unit dry and clean. Avoid exposing it to direct sunlight or extreme temperatures.
- Regularly check cables and connections for any signs of wear or damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Inaccurate Readings | Uncalibrated electrodes, dirty electrodes, expired calibration solutions, damaged electrodes. | Calibrate the device regularly. Clean electrodes thoroughly. Use fresh calibration solutions. Replace damaged electrodes. |
| Device Not Connecting to WiFi | Incorrect WiFi password, device too far from router, router issues, app pairing error. | Verify WiFi password. Move device closer to router. Restart router. Re-attempt pairing in the Tuya Smart app. |
| No Display on LCD | No power, faulty power adapter, device malfunction. | Check power connection. Try a different power outlet. Contact customer support if issue persists. |
| App Not Displaying Real-time Data | No internet connection on phone, app not refreshed, device offline. | Check phone's internet connection. Pull down to refresh in the app. Verify device is online in the app. |
Specifications
| Parameter | Range | Accuracy |
|---|---|---|
| PH | 0.00pH - 14.00pH | ±0.03pH |
| ORP | -2000mv - +2000mv | ±5mv |
| EC | 0~19000us/cm, 0~199.0ms/cm | ±2% FS |
| TDS | 0~1999ppm, 0~19.9ppt | ±2% FS |
| SALT | 0~199.9ppt, 0%~20% | ±2% FS |
| S.G | 0.001 | N/A |
| Temperature | 0.1°C (0.2°F) | ±1.0°C |
| CF | 0-1999.0 CF | N/A |
| Power Supply | DC6V | N/A |
Dimensions: 3 x 2 x 1 cm; 20 g (Product Weight)
Warranty and Support
For specific warranty information and customer support, please refer to the documentation provided with your purchase or contact ETRYOX customer service directly. If you encounter any abnormalities or issues not covered in this manual, please reach out to customer service for assistance.
Manufacturer: ETRYOX
ASIN: B0D7BR17H9





