Moray ME201W SmartLife TUYA App Water Tank Level Sensor User Manual

1. Introduction

The Moray ME201W Water Tank Liquid Level Monitor is a high-performance device designed for efficient liquid level monitoring. It utilizes ultrasonic sensor technology to provide unattended automatic detection, significantly improving monitoring accuracy and efficiency without manual intervention.

This equipment offers high-precision liquid level measurement, with its precise ultrasonic sensor accurately reading the liquid level inside the tank and providing real-time data. This helps users stay informed about their water tank's liquid level at all times.

Furthermore, the ME201W features intelligent remote monitoring capabilities, allowing users to monitor the water tank's liquid level via network connectivity. Through a dedicated app on computers or mobile phones, users can easily perform remote monitoring, preventing issues caused by excessively low or high liquid levels.

Designed for simplicity, the device is easy to install and use, reducing installation costs and complexity. This facilitates better management of water tank liquid levels in daily use, ensuring the stability and safety of the water supply system.

2. Specifications

3. Package Contents

Please check the package for the following items:

• 1 x ME201W Level Sensor
• 1 x Power Adapter (AC/DC ADAPTOR)
• 1 x Connection Cable

Image: Sensor features including touch switch, waterproof wiring port, and sensor.

4. Safety Information

• Ensure the power adapter is connected to a suitable power source (100-240VAC) and that the output is 5V DC.
• Do not expose the sensor or power adapter to extreme temperatures or direct water immersion beyond its IP65 rating.
• When using with oil tanks, ensure proper ventilation and adhere to all safety regulations for handling flammable liquids. While the sensor is rated for oil tanks, exercise caution to prevent fire hazards.
• Keep the device out of reach of children.

5. Setup

5.1 Physical Installation

Proper physical installation is crucial for accurate readings. Follow these steps:

1. Remove the release paper from the gasket, and attach the gasket to the center of the tank where the hole will be drilled.
2. Drill a hole right in the middle of the tank with a diameter of >60mm.
3. Place the sensor over the gasket, keeping it aligned with the screw holes and unobstructed.
4. Fasten the sensor with a self-tapping screw.

Important Notes for Installation:

• Hold the sensor perpendicular to the liquid surface.
• Install the sensor away from the water inlet to avoid pseudo-echo.
• The sensor installation cannot be close to the bulkhead, otherwise it will cause a strong pseudo-echo.
• There should not be any obstacles in the reflective area of the sensor.
• If the mounting surface is curved, fix the sensor with screws just enough to prevent it from being stressed. If data is abnormal, loosen the screws.

Image: Correct and incorrect sensor installation practices.

Image: Sensor beam angle, reflection area, and obstacles to avoid.

Image: ME201W Sensor physical dimensions.

Image: Various tank applications for the sensor.

5.2 App Download

Download the control application to your mobile device:

• Scan the QR code provided in the product packaging or on the manual (if available).
• Alternatively, search for "TUYA Smart APP" or "Smart Life APP" in your device's app store (Android or iOS).

5.3 Network Reset

If you need to reset the network connection:

• Press and hold the button on the sensor for 5 seconds.
• The LED light will flash rapidly. Release the button.
• The network will reset, and the device will automatically attempt to connect to the network.

5.4 Connecting Sensors to the App

To connect your ME201W sensor to the app:

1. Ensure both WiFi and Bluetooth are enabled on your mobile phone.
2. Open the "TUYA Smart APP" or "Smart Life APP".
3. Navigate to the device adding interface within the app.
4. Follow the on-screen prompts to add the device. This typically involves selecting the device type, entering your 2.4GHz WiFi network password, and confirming the connection.

Note:

• WiFi frequency can only be 2.4GHz, not 5GHz.
• When adding a device, ensure the sensor and your phone are connected to the same WiFi network.
• After successful setup, the indicator light on the sensor must show a steady light.
• If the phone cannot find the device or fails to connect, hold down the button for 5 seconds until the indicator flashes to re-enter pairing mode.

Image: App connection steps.

Image: WiFi signal coverage illustration.

6. Operation

6.1 Monitoring Liquid Level

Once connected, you can monitor the liquid level through the app:

• The app displays the liquid level ratio (percentage), current liquid depth, and liquid level status (Normal, Full alarm, Lower alarm).
• You can also view the sensor's battery level and historical liquid depth data over time (Day, Month, Year).

Image: App interface showing liquid level monitoring.

Image: App device list and detailed monitoring screen.

Video: Demonstration of liquid level changes and corresponding app alarms (lower and full).

6.2 Setting Alarms

You can configure alarm thresholds within the app's settings:

• Installation height (A): Set the distance from the sensor to the tank bottom.
• Liquid maximum depth (B): Enter the maximum height of liquid the tank can hold.
• Set Max (C): Configure the percentage for a high-level alarm. The app will display "Full alarm" when the liquid level reaches this threshold.
• Set Min: Configure the percentage for a low-level alarm. The app will display "Lower alarm" when the liquid level drops to this threshold.

Example:

• Installation height, A = 4m; Liquid maximum depth, B = 3m; Actual liquid level value, C = 2m; Set Max = 60%, Set Min = 20%.
• Level Status: Full alarm (C/B*100% = 2/3*100% = 67%)

6.3 Multi-Tank Monitoring

The Tuya SmartLife app allows you to monitor multiple ME201W sensors simultaneously, providing a centralized view of all your tanks.

Image: Multi-tank monitoring in the app.

6.4 Pump Control (Optional)

Certain models of the Moray liquid level sensor (e.g., ME201WC, ME201WCS) offer integrated pump control functionality. These models can be wired to control a pump directly or via a smart plug, allowing for automated liquid level management based on your set thresholds.

Image: Pump control diagram via smart plug and app.

7. Maintenance

• Cleaning: Periodically clean the sensor surface to ensure accurate readings. Use a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Power Connection: Regularly check the power adapter and cable for any signs of damage. Ensure a secure connection.
• WiFi Stability: Ensure your WiFi network is stable and within range of the sensor for continuous monitoring.
• Firmware Updates: Check the Tuya SmartLife app periodically for any available firmware updates for your sensor to ensure optimal performance and new features.

8. Troubleshooting

• Device not found or fails to connect during setup:
  • Ensure your WiFi network is 2.4GHz. The sensor does not support 5GHz WiFi.
  • Make sure your phone and the sensor are connected to the same 2.4GHz WiFi network.
  • Perform a network reset on the sensor by pressing and holding the button for 5 seconds until the LED flashes rapidly.
  • Ensure the sensor's LED shows a steady light after successful connection.
• Abnormal or inaccurate liquid level data:
  • Check the physical installation of the sensor. Ensure it is perpendicular to the liquid and not stressed. If the mounting surface is curved, try loosening the screws slightly.
  • Verify there are no obstacles (e.g., pipelines, floating balls, boards) in the reflective area directly beneath the sensor.
  • Confirm that the "Installation height" and "Liquid maximum depth" settings in the app are correctly configured.
• No readings or sensor offline:
  • Check the power supply to the sensor. Ensure the adapter is plugged in and functioning.
  • Verify the WiFi connection. If the WiFi signal is weak or unstable, the sensor may go offline.
  • Perform a network reset and attempt to reconnect the sensor to the app.
• App not receiving notifications:
  • Check your phone's notification settings for the Tuya SmartLife app to ensure they are enabled.
  • Verify that alarm thresholds (Set Max/Min) are correctly configured in the app.

9. User Tips

• Users report fast connection speed and ease of use, making setup straightforward.
• The sensor provides accurate water level measurement and timely monitoring reminders, which is highly appreciated for continuous oversight.
• The compact design allows for easy installation and integration into various tank setups.
• The device is suitable for monitoring water levels in ponds and large concrete water tanks.
• If you encounter any issues, contacting the seller or manufacturer's support is recommended, as they are known for responsive assistance.

10. Frequently Asked Questions (FAQ)

Q: How many sensors can be monitored together?

A: The Tuya SmartLife app supports monitoring multiple ME201W sensors simultaneously, allowing you to manage several tanks from a single interface.

Q: Can it be installed on a large concrete water tank? What size hole is needed?

A: Yes, the sensor can be installed on various tank types, including large concrete water tanks. A hole with a diameter greater than 60mm is required for installation.

Q: Is calibration needed for every tank, or is it auto-calibrated?

A: The device requires manual setting of the "Installation height" (distance from sensor to tank bottom) and "Liquid maximum depth" in the app for accurate readings and alarm thresholds. It is not fully auto-calibrated in the sense of factory calibration for each tank, but rather configured through these settings.

Q: Is this level sensor suitable for a petrol metal tank?

A: The product specifications list "Water /Oil Tank" as an application. While it may be physically compatible with metal oil tanks, exercise extreme caution with flammable liquids like petrol. Ensure proper ventilation and adhere to all relevant safety measures and local regulations when using with such substances.

Q: Can it control an electric pump via WiFi?

A: The standard ME201W model primarily provides monitoring and alarm functions. However, specific variants like the ME201WC (wired pump control) or ME201WCS (smart plug pump control) offer pump control functionality. Please check your specific model's capabilities.

11. Warranty and Support

For any product inquiries, technical support, or warranty claims, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.

For additional detailed information, including warranty terms and further technical specifications, please refer to the official user manual PDF available at: User manual (PDF).