YINMIK Salt Water Pool Monitor YK-FL05 User Manual
Model: YK-FL05
Introduction
The YINMIK YK-FL05 is a 5-in-1 smart monitor designed for salt water pools, hot tubs, and spas. It provides real-time measurements of pH, Salinity, EC (Conductivity), TDS (Total Dissolved Solids), and Temperature. This device connects to the Tuya Smart App via a 2.4GHz WiFi gateway, allowing for remote monitoring and management of your pool's water quality.

Image: YINMIK YK-FL05 Salt Water Pool Monitor and its corresponding mobile application interface.
Setup
Follow these steps to set up your YINMIK YK-FL05 monitor:
- Download the Tuya Smart App: Search for "Tuya Smart" in your mobile device's app store (available for iOS and Android).
- Connect the Tuya Gateway: Ensure the gateway is powered on and connected to a 2.4GHz wireless network. The monitor operates within the 2.4GHz network coverage.
- Add Monitor on Tuya Smart App: Open the app, follow the instructions to add the gateway, and then add the YK-FL05 monitor to the gateway. Refer to the video below for detailed connection steps.
- Initial Placement: Once successfully connected, the monitor can be placed directly into your pool. No calibration is required for the first use.
Video: Instructions on how to connect the YINMIK YK-FL05 monitor to the Tuya Smart App.

Image: The YINMIK YK-FL05 monitor floating in a swimming pool, ready for operation.
Operating Instructions
The YINMIK YK-FL05 monitor provides continuous water quality data accessible through the Tuya Smart App.
- 5-in-1 Monitoring: The device measures pH, Salinity, EC, TDS, and Temperature of the water. All values are displayed on the Tuya Smart App.
- Remote Monitoring: As long as the gateway and monitor are within the connected wireless network's coverage, you can view pool water quality data remotely from anywhere via the Tuya Smart App.
- Red Reminder Feature: For salt water pools, the recommended pH range is 7.2-7.8 and optimal salinity is 2700-3400 ppm. If any measured value falls outside these recommended ranges, the corresponding reading in the app will display in red, indicating that water quality adjustment may be needed.
- Family Sharing: The Tuya Smart App allows you to create a family group to share pool data with others, enabling collaborative management of pool conditions.

Image: The Tuya Smart App displaying real-time water quality parameters.

Image: Remote monitoring of pool data via the Tuya Smart App on various devices.
Maintenance
Proper maintenance ensures the longevity and accuracy of your YINMIK YK-FL05 monitor.
- Calibration: While not required for initial use, regular calibration is essential for maintaining measurement accuracy over time. The package includes pH 4.00, 7.00, 10.01, and salinity 12.88 calibration solutions. Refer to the video below for the calibration process.
- Charging: The monitor supports both solar charging and USB charging. The integrated solar panel provides convenient power for outdoor use. For faster or indoor charging, use the USB port.
- Probe Care: The monitor features an upgraded stable probe designed for long-term immersion in water. Periodically inspect the probe for any buildup or damage and clean gently if necessary.
Video: Detailed guide on how to calibrate the YINMIK Salinity Monitor.

Image: Calibration solutions for pH and salinity, used for maintaining monitor accuracy.

Image: The YK-FL05 monitor highlighting its solar charging panel and USB charging capability.
Troubleshooting
If you encounter issues with your YINMIK YK-FL05 monitor, consider the following:
- No Readings/Incorrect Readings:
- Ensure the monitor is fully charged (via solar or USB).
- Verify the probe is clean and properly immersed in the water.
- Perform a calibration using the provided solutions.
- Connectivity Issues:
- Confirm your WiFi network is 2.4GHz and the gateway is within range.
- Check if the gateway is properly connected to the internet.
- Restart the gateway and the monitor.
- Ensure the Tuya Smart App is updated to the latest version.
- App Not Displaying Data:
- Check your mobile device's internet connection.
- Log out and log back into the Tuya Smart App.
If problems persist, please refer to the support section for contact information.
Specifications
| Parameter | Range |
|---|---|
| pH | 0.0-14.0 pH (Recommended: 7.2-7.8 pH) |
| Salinity | 0-9990 ppm (Recommended: 2700-3400 ppm) |
| EC (Conductivity) | 0-9990 µS/cm, 10.01-19.99 mS/cm |
| TDS (Total Dissolved Solids) | 0-9990 ppm |
| Temperature | 32.0-122.0 °F (0.0-50.0 °C) |
| Connectivity | 2.4GHz WiFi (via Tuya Gateway) |
| Material | ABS Plastic |
| Charging | Solar and USB |
Included Components: 5-in-1 Pool Monitor, User Manual, Calibration Solutions (pH 4.00, 7.00, 10.01, Salinity 12.88), Gateway, Wrench, Fixed Rope.

Image: The upgraded stable probe of the YINMIK YK-FL05 monitor.
Warranty and Support
For information regarding product warranty, please refer to the documentation included with your purchase or contact YINMIK customer service directly.
Customer Support: If you have any questions, require technical assistance, or need to report an issue, please contact YINMIK customer support through their official website or the contact information provided in your product packaging.



