ME201R Smartlife APP Ultrasonic Level Sensor User Manual

1. Introduction

The morayelec ME201R Smartlife APP Ultrasonic Level Sensor is a high-performance device designed for wireless monitoring of liquid levels in tanks. It integrates ultrasonic sensor technology with smart home automation systems like Tuya Smart APP or Smart Life APP, providing real-time data on liquid depth and temperature. This manual will guide you through the installation, operation, and maintenance of your device.

2. Product Components

The ME201R system includes the following main components:

• Ultrasonic Sensor: Measures the liquid level and temperature.
• Gateway (Receiver): Connects to your home WiFi network and communicates wirelessly with the sensor. Features an LCD display for local readings.
• Power Adapter: For powering the gateway.
• Cables: For connecting the sensor to its power source and the gateway.
• Mounting Plate & Screws: For secure installation of the sensor.
• User Manual: This document.

3. Specifications

For more detailed information, please refer to the official User Manual (PDF).

4. Setup and Installation

4.1. Initial Connection

1. Power on the AC/DC ADAPTOR for the sensor first, and then connect it to the sensor.
2. Power on the gateway with a 5V/1A adapter (Type-C interface).
3. Scan the QR code provided in the manual or on the product packaging to download the “TUYA Smart APP” or “Smart Life APP” on your mobile device.

4.2. Network Reset (Gateway)

To reset the network connection of the gateway:

1. Press and hold the gateway touch key (labeled with a circle icon) for 5 seconds.
2. The LED light will flash rapidly.
3. Release the button. The network will reset, and the device will automatically attempt to connect to the network.

4.3. Connecting Gateway to APP

Ensure your mobile phone's WiFi and Bluetooth are turned on.

1. Open the Tuya Smart APP or Smart Life APP.
2. Follow the in-app instructions to add a new device. The app should automatically detect the "Liquid Level Monitor".
3. Enter your 2.4GHz WiFi network information (SSID and password). Note: The device only supports 2.4GHz WiFi.
4. Once connected, the sensor will be added to your device list.

4.4. Sensor Installation

Proper installation of the sensor is crucial for accurate readings. Avoid obstacles in the reflection area.

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 in the middle of the tank with a diameter greater than 55mm.
3. Place the sensor over the gasket, ensuring it is centered and the probe is unobstructed.
4. Fasten the sensor with the provided self-tapping screws.

Note: If the mounting surface is curved, fix the sensor with screws to prevent stress. If data is abnormal, loosen the screws. Ensure the sensor is held perpendicular to the liquid surface and installed away from water inlets to avoid pseudo-echoes. Avoid installing too close to bulkheads.

5. Operation

5.1. Gateway Display Instructions

The gateway features an LCD display and LED indicators:

• Battery Icon: Indicates the gateway's power level (100%, 80%, 60%, 40%, 20%).
• Temperature Display: Shows the water tank environmental temperature in ℃.
• Percentage Display: Shows the water tank level as a percentage (0%~100%).
• LED Lights:
  • RF Status LED: Flashes for 15 seconds when the sensor is reporting data; off when not reporting.
  • Pump Light: Indicates pump status (if connected and controlled).
  • WiFi Light: Indicates WiFi connection status.

5.2. APP Interface and Settings

The mobile application provides comprehensive monitoring and control features:

• Liquid Level Ratio & Depth: Real-time display of liquid level percentage and depth.
• Liquid Level Status: Indicates normal, full alarm, or lower alarm.
• Temperature: Displays the sensor's measured temperature.
• Sensor Power: Shows the current voltage of the sensor.
• History: View historical liquid level data over time (Day, Month, Year).

5.2.1. Product Settings in APP

Configure your device settings through the app:

• Installation Height: Set the distance from the sensor to the tank bottom (A).
• Liquid Maximum Depth: Define the maximum height of liquid in the tank (B).
• Set Max: Configure the threshold for a high-level alarm (based on actual liquid level value C).
• Set Min: Configure the threshold for a low-level alarm.
• Sensor ID: Used for linking the gateway to the sensor. Default is linked. To re-link another sensor, enter its ID.
• Beep Alarm: Toggle the device's audible alarm sound on or off.
• Pump Control (Optional): If a pump is connected, you can set the pump working mode (e.g., Refilling by default) and control it.

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

5.3. Multi-Tank Monitoring

The system supports monitoring multiple tanks. Each sensor communicates with the gateway, and data for all connected sensors can be viewed and managed through the mobile application.

5.4. Share Device

You can share your water tank data with other users through the mobile application, allowing multiple individuals to monitor the liquid levels.

6. Maintenance

• Cleaning: Periodically clean the sensor surface to ensure accurate readings. Use a soft, damp cloth. Do not use abrasive cleaners.
• Power Supply: Ensure the gateway and sensor receive stable power. Check cables for any damage.
• Firmware Updates: Regularly check the mobile app for any available firmware updates for the device to ensure optimal performance and access to new features.
• Environmental Conditions: While the sensor is rated IP65, extreme environmental conditions outside the specified operating temperature range (-20℃ to 70℃) may affect performance.

7. Troubleshooting

7.1. Common Issues and Solutions

• Device not connecting to network / WiFi light not flashing:
  • Perform a network reset on the gateway (refer to Section 4.2).
  • Ensure your WiFi network is 2.4GHz, as the device does not support 5GHz.
  • Make sure the gateway and your phone are connected to the same WiFi network during setup.
• Sensor not reporting data / Sensor light off:
  • Check the sensor's power connection.
  • Ensure the sensor is within the 300m RF433MHz range of the gateway (without obstacles).
  • If re-linking a sensor, ensure the correct Sensor ID is entered in the app.
• Inaccurate liquid level readings (e.g., 188% error or incorrect percentage):
  • Verify the "Installation Height" and "Liquid Maximum Depth" settings in the app are correctly calibrated to your tank's dimensions.
  • Ensure there are no obstacles (pipelines, floating balls, rough inner walls, etc.) in the sensor's reflection area (refer to Figure 4.4).
  • Check if the sensor is installed perpendicular to the liquid surface.
  • Loosen the mounting screws slightly if the mounting surface is curved, as stress can affect readings.
• Temperature reading issues (e.g., too high in hot weather):
  • The sensor's temperature reading is for the environment around the sensor, not necessarily the liquid itself.
  • Ensure the sensor is not exposed to direct sunlight or other heat sources that could artificially inflate its temperature reading, even if rated for higher temperatures.
• "No Sensor" displayed on gateway:
  • Check the sensor's power and connection to the gateway.
  • Perform a network reset and re-add the sensor if necessary.

If you encounter persistent issues, please consult the full PDF manual or contact morayelec customer support.

8. User Tips

• Calibration is Key: Take the time to properly install and calibrate the sensor, especially setting the installation height and liquid maximum depth in the app, for the most accurate readings.
• WiFi Frequency: Remember that the device only supports 2.4GHz WiFi. Ensure your router is configured accordingly or that you are connecting to the correct band.
• Sensor ID for Reconnection: If you need to re-link a sensor or connect a new one, locate its Sensor ID and use it in the app's settings.
• Environmental Considerations: While robust, be mindful of extreme heat exposure for the sensor, as it might influence temperature readings, even if the device is within its operating range.
• Obstruction-Free Zone: Ensure the area directly below the sensor inside the tank is clear of any obstructions (pipes, floating debris, rough surfaces) to prevent inaccurate ultrasonic readings.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact morayelec directly through their official channels. Keep your purchase receipt as proof of purchase.

morayelec is committed to providing reliable IoT solutions and customer satisfaction.