MorayElec ME202D Smart Home Liquid Level Monitor User Manual

1. Introduction and Overview

The MorayElec ME202D is a high-performance smart liquid level monitoring device designed for various applications, including water tanks and fuel tanks. It offers unattended automatic detection using ultrasonic sensor technology, providing high-precision, real-time liquid level data without manual intervention. The device integrates with smart home systems like Tuya SmartLife, allowing for intelligent remote monitoring via mobile applications. Its simple design ensures easy installation and user-friendly operation, helping users effectively manage liquid levels and prevent issues caused by low or high levels.

2. Product Features

• High Accuracy: Precise ultrasonic sensor for accurate liquid level readings.
• Wide Measuring Range: Up to 5 meters.
• Remote Monitoring: Connects to Tuya SmartLife APP for real-time data and alerts on your smartphone.
• Smart Home Integration: Works with Alexa and Google Assistant.
• Flexible Installation: Suitable for various tank types, including underground water tanks and high-humidity environments.
• Convenient Control: Features a touch switch on the main unit and mobile phone control via the app.
• Durable Design: Lightweight and easy to install.
• Operating Temperature: -20°C to 70°C.
• Power Supply: 100-240VAC to DC 5V.

3. Specifications

4. Package Contents

Please check the package for the following items:

• 1x MorayElec ME202D Tank Level Monitor Main Unit
• 1x Submersible Liquid Level Sensor (with 5-meter cable)
• 1x AC/DC Power Adapter

5. Setup and Installation

5.1 Physical Installation

1. Place the submersible liquid level sensor into the liquid to be measured. Ensure the sensor is fully submerged and positioned correctly for accurate readings.
2. The ME202D (ME202W model) is designed to be suitable for various environments, including underground water tanks and high-humidity conditions, and is not affected by floating objects.

5.2 Power Connection

1. Connect the power adapter cable to the ME202D main unit.
2. Plug the AC/DC power adapter into a standard electrical outlet.

5.3 App Installation

1. 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 (available for iOS and Android).

5.4 Device Pairing

1. With the device powered on, press and hold the button on the ME202D main unit for 5 seconds. The LED light will flash rapidly, indicating it's in pairing mode.
2. Open the “Tuya Smart APP” or “Smart Life APP” on your mobile phone. Ensure your phone's Wi-Fi and Bluetooth are enabled.
3. In the app, tap “Add Device” (or the ‘+’ icon) to search for nearby devices.
4. The app should automatically detect the “ME202W Level Sensor”. Select it to proceed.
5. Enter your Home Wi-Fi network name and password when prompted.
6. Confirm the connection. Once successfully added, the device will appear in your app's device list.

6. Operation

6.1 Monitoring Liquid Level

Once connected, the app's main screen for the ME202D will display:

• Liquid Level Ratio: Percentage of the tank filled.
• Liquid Level Depth: Actual depth of the liquid in meters.
• Liquid Level Status: Indicates 'Normal', 'Lower alarm', or 'Full alarm'.
• Supply Voltage: Current voltage of the device.
• History: Access historical data and alarm records.

6.2 Setting Alarms

To configure alarm thresholds:

1. From the main device screen in the app, tap on 'Setting'.
2. Set Max: Adjust the maximum liquid level percentage (e.g., 80%) at which a 'Full alarm' will be triggered.
3. Set Min: Adjust the minimum liquid level percentage (e.g., 20%) at which a 'Lower alarm' will be triggered.
4. Liquid maximum depth: Set the total maximum depth of your tank (e.g., 5.00m) for accurate depth calculations.

6.3 Pump Control (if applicable)

The app provides options for controlling a connected pump:

• Auto Pump Control: Toggle to switch between automatic and manual pump operation.
• Pump Mode: Select 'Supply' to fill the tank or 'Drainage' to empty it.
• Pump Switch: Manually start or stop the pump.

7. Maintenance

• Sensor Cleaning: Periodically inspect and clean the submersible sensor to prevent buildup that could affect accuracy. Use a soft cloth and mild detergent if necessary.
• Cable Inspection: Regularly check the sensor cable for any signs of wear, cuts, or damage. Ensure all connections are secure.
• Power Supply: Verify that the power adapter and main unit are receiving stable power.
• App Updates: Keep your Tuya Smart or Smart Life app updated to the latest version for optimal performance and new features.

8. Troubleshooting

• Device Not Found During Pairing:
  - Ensure the ME202D main unit's LED is flashing rapidly (indicating pairing mode). If not, press and hold the button for 5 seconds to reset.
  - Verify your mobile phone's Wi-Fi and Bluetooth are turned on.
  - Make sure the device is within range of your Wi-Fi router.
  - Check that your Wi-Fi network is 2.4GHz, as many smart home devices do not support 5GHz networks.
• Inaccurate Liquid Level Readings:
  - Check the physical placement of the submersible sensor. Ensure it is not obstructed and is fully submerged.
  - Clean the sensor head to remove any debris or buildup.
  - Verify that the 'Liquid maximum depth' setting in the app matches the actual depth of your tank.
• No Data in App / Device Offline:
  - Confirm the ME202D main unit is powered on and the power adapter is securely connected.
  - Check your home Wi-Fi network status. Ensure it is active and has internet access.
  - Restart the ME202D device by unplugging and re-plugging the power adapter.
  - If the issue persists, try re-pairing the device with the app.
• Alarms Not Triggering:
  - Review your 'Set Max' and 'Set Min' alarm thresholds in the app settings to ensure they are configured correctly for your needs.
  - Check your app's notification settings to ensure alerts are enabled.

9. User Tips

• For optimal performance, ensure your Wi-Fi signal is strong at the location of the ME202D main unit.
• Regularly check the 'History' section in the app to monitor trends in liquid level and identify any unusual patterns.
• When setting alarm thresholds, consider a buffer zone (e.g., 10-20% from full/empty) to allow time for intervention before critical levels are reached.
• If using the pump control feature, always double-check the 'Pump Mode' (Supply/Drainage) before activating the 'Pump Switch' to avoid unintended actions.

10. Warranty and Support

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