1. Introduction
The yieryi THE01888S is an advanced 8-in-1 Soil Multi-Parameter Sensor designed for precision agriculture and home gardening. This device provides accurate, real-time readings of key soil parameters, enabling users to make informed decisions for optimal crop growth and soil health. It integrates multiple sensors to measure soil moisture, pH, electrical conductivity (EC), temperature, humidity, salinity, nitrogen (N), phosphorus (P), and potassium (K).

2. Package Contents
Upon unpacking, please verify that all items listed below are present and in good condition:
- 1 x yieryi THE01888S 8-in-1 Soil Multi-Parameter Sensor Set (includes sensor unit with integrated USB cable and USB-C adapter)
If any items are missing or damaged, please contact your vendor immediately.
3. Specifications
| Feature | Detail |
|---|---|
| Model | THE01888S |
| Functions Measured | pH, Electrical Conductivity (EC), Moisture, Temperature, Humidity, Salinity, Nitrogen (N), Phosphorus (P), Potassium (K) |
| Probe Material | 316L Stainless Steel |
| Waterproof Rating | IP68 |
| Connectivity | USB (with USB-C adapter for Android devices) |
| Battery Included | No |
| High-concerned chemical | None |
| DIY Supplies | Woodworking |
| Origin | Mainland China |
| Dimensions (Sensor Unit) | 128mm (Length) x 56mm (Width) x 10mm (Thickness) - 46mm (Height including cable entry) |
| Cable Length (USB) | 2.35m / 92.52in |
| Cable Length (USB-C Adapter) | 0.155m / 6.10in |
| Package Weight | 0.21 kg |
| Package Dimensions | 20cm x 12cm x 5cm |

4. Setup
The yieryi THE01888S sensor is designed for straightforward setup and immediate use with compatible Android devices.
- Download the Application: Locate and download the dedicated soil monitoring application from your Android device's app store. The app is free for life.
- Connect the Sensor:
- Connect the USB-C adapter to the USB cable of the sensor.
- Plug the USB-C adapter into the USB-C port of your Android smartphone or tablet.
The sensor is powered directly by your mobile device, allowing for real-time data viewing.
- Launch the App: Open the installed soil monitoring application on your Android device. The app should automatically detect the connected sensor and begin displaying data.

5. Operating Instructions
Follow these steps to effectively use your 8-in-1 Soil Multi-Parameter Sensor:
- Prepare the Soil: Ensure the soil in the area you wish to test is free from large debris. For optimal nitrogen readings, moisten the soil before measurement if initial readings show zero.
- Insert the Sensor: Gently insert the metal probes of the sensor directly into the soil. Ensure the probes are fully submerged to the indicated depth for accurate readings. The sensor can be inserted directly or buried in the soil for continuous monitoring.
- Monitor Data: Once inserted and connected to your Android device, the application will display real-time measurements for:
- Humidity
- Temperature
- Electrical Conductivity (EC)
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
- Salinity
- pH
- Data Storage and Export: The application supports data storage, allowing you to save current real-time data locally on your phone. You can also export soil parameter data to Excel for comprehensive analysis and record-keeping.



6. Maintenance
Proper maintenance ensures the longevity and accuracy of your soil sensor:
- Cleaning: After each use, gently wipe the metal probes with a clean, damp cloth to remove any soil residue. Avoid using abrasive materials or harsh chemicals that could damage the probes.
- Storage: Store the sensor in a clean, dry place away from direct sunlight and extreme temperatures.
- Probe Integrity: The sensor features a durable 316L stainless steel probe and an IP68 waterproof rating, making it suitable for long-term use in various environments, including saline-alkali or humid conditions. However, avoid bending or forcefully impacting the probes.
7. Troubleshooting
- Problem: Inaccurate or zero nitrogen readings.
- Solution: If initial nitrogen readings are zero or appear inaccurate, moisten the soil thoroughly before taking another measurement. Nitrogen readings are highly dependent on soil moisture content.
- Problem: Sensor not connecting to the app.
- Solution:
- Ensure the USB-C adapter and USB cable are securely connected to both the sensor and your Android device.
- Verify that the soil monitoring application is installed and updated to the latest version.
- Try restarting your Android device and reconnecting the sensor.
- Check if your Android device supports USB OTG (On-The-Go) functionality, which is required for external USB device connections.
- Problem: Inconsistent readings.
- Solution:
- Ensure the probes are fully inserted into the soil and making good contact.
- Clean the probes thoroughly after each use to prevent residue buildup affecting accuracy.
- Test in multiple spots within the same area to account for soil variability.
8. User Tips
- Moisture for NPK: Always ensure the soil is adequately moist, especially when measuring Nitrogen, Phosphorus, and Potassium, as dry soil can lead to inaccurate or zero readings for these parameters.
- Regular Monitoring: Consistent monitoring of your soil conditions over time can help you understand trends and make proactive adjustments to your plant care.
- Data Analysis: Utilize the data export feature to track changes in soil parameters, which can be invaluable for optimizing fertilization and irrigation schedules.
- Probe Depth: For best results, insert the probes to a consistent depth each time you take a measurement.
9. Warranty and Support
For specific warranty details, please refer to the terms and conditions provided by your original point of purchase or contact the seller directly. The manufacturer ensures the product meets high safety and operational standards, as indicated by its CE certification.
For technical support or inquiries, please refer to the contact information provided by the seller or through the dedicated soil monitoring application.