Morayelec ME202W WiFi Ultrasonic Liquid Level Monitor

1. Introduction

The Morayelec ME202W is a high-performance WiFi ultrasonic liquid level monitor designed for remote monitoring of liquid levels in various tanks, including water and oil tanks. Utilizing advanced ultrasonic sensor technology, this device provides accurate, real-time liquid level data and supports intelligent remote monitoring via the Tuya SmartLife application. Its compact design ensures easy installation and user-friendly operation, making it an ideal solution for home automation systems and industrial applications.

This equipment enables unattended automatic detection, significantly improving monitoring accuracy and efficiency. Users can easily monitor tank levels remotely via smartphones or other devices, preventing issues caused by low or high liquid levels.

2. Safety Information

• Ensure the power adapter is correctly connected to a suitable power source (100-240VAC).
• Do not expose the sensor or power adapter to extreme temperatures or direct moisture beyond its operating specifications.
• Avoid disassembling the device; refer to qualified personnel for repairs.
• Keep the device out of reach of children.
• Always follow local regulations for electrical and plumbing installations.

3. Package Contents

Please check the package for the following items:

• Morayelec ME202W Ultrasonic Liquid Level Sensor
• AC/DC Power Adapter (100-240VAC to DC 5V)
• User Manual

4. Specifications

5. Setup and Installation

5.1 Physical Installation

Proper sensor placement is crucial for accurate readings. Follow these guidelines:

• Hold the sensor perpendicular to the liquid surface: Ensure the sensor is mounted directly above the liquid, facing straight down.
• Install the sensor away from the water inlet: This prevents false readings (pseudo-echo) caused by incoming water turbulence.
• Avoid placing the sensor too close to the tank bulkhead: Proximity to tank walls can also cause strong pseudo-echoes and inaccurate measurements.

5.2 App Connection

To connect your ME202W sensor to the Tuya SmartLife app:

1. Power On: First, connect the AC/DC power adapter to a power outlet, then connect it to the sensor.
2. Download App: Scan the QR code (if provided in packaging) or search for “Tuya Smart” or “Smart Life” in your mobile device’s app store and download the application.
3. Network Reset (Pairing Mode):
   • Press the touch button on the sensor once; the LED light will dim.
   • Then, press and hold the touch button for 5 seconds. The LED light will flash rapidly, indicating the device is in network reset/pairing mode. Release the button.
4. Connect to App:
   • Ensure your phone's WiFi and Bluetooth are turned on.
   • Open the Tuya Smart or Smart Life app. The app should automatically detect the new device. If not, click "Add Device" or the '+' icon.
   • Select the detected "ME201W Level Sensor" (or similar name).
   • Enter your 2.4GHz WiFi network password when prompted.
   • Follow the on-screen instructions to complete the connection.

6. Operation

6.1 Monitoring Liquid Level

Once connected, the Tuya SmartLife app will display real-time data from your sensor:

• 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 sensor.
• History: View historical liquid level data over days, months, or years.

6.2 Setting Alarms and Scenarios

You can customize alarm thresholds and create automated scenarios within the app:

1. In the sensor interface, scroll down and click "Setting".
2. Adjust "Set Max" and "Set Min" values to define your desired high and low liquid level thresholds.
3. To create an alert scenario, go to the "Smart" or "Scene" tab in the app.
4. Click "Create Scene" and select "When device status changes".
5. Choose your ME202W sensor and select "Liquid Level Status".
6. Set the condition (e.g., "Full alarm" or "Lower alarm").
7. Under "Then", add a task such as "Send notification" (e.g., Message Center, Message Notification, Phone Notification).
8. Save the scene with a descriptive name. You will receive notifications when the liquid level reaches the set alarm state.

6.3 Optional Pump Control

For models like ME201WC (Pump on/off by Wire) or ME201WCS (Pump on/off by Smart Plug), the device can be integrated with a pump for automated liquid management. This functionality is configured through smart scenarios in the Tuya SmartLife app, allowing the pump to start or stop based on predefined liquid level conditions.

6.4 Multi-Tank Monitoring

The Tuya SmartLife app supports monitoring multiple ME202W (or ME201W series) sensors simultaneously. This allows you to keep track of liquid levels in several tanks from a single interface, providing a comprehensive overview of your liquid storage systems.

7. Troubleshooting

• Device not connecting to App: Ensure your phone's WiFi and Bluetooth are enabled. Verify that your WiFi network is 2.4GHz. Perform a network reset on the sensor by pressing and holding the touch button for 5 seconds until the LED flashes rapidly.
• Inaccurate readings: Check the sensor's physical installation. Ensure it is perpendicular to the liquid surface, away from water inlets, and not too close to tank bulkheads (refer to Section 5.1).
• No notifications: Verify that alarm scenarios are correctly set up in the Tuya SmartLife app (refer to Section 6.2) and that app notifications are enabled on your phone.
• Intermittent connection: Ensure the sensor is within range of your WiFi router and that there are no significant obstructions. The device boasts strong signal coverage, but extreme distances or thick walls can affect connectivity.

8. User Tips

• For optimal performance, ensure a stable 2.4GHz WiFi connection. The device is known for its fast connection speed.
• Regularly check the app for monitoring reminders and accurate water level measurements.
• Explore the advanced scenario settings in the Tuya SmartLife app to automate actions based on liquid levels, such as turning on/off pumps or triggering other smart home devices.
• Consider the specific application (e.g., water, oil, septic tanks) when setting up, as different liquids might require slight adjustments to alarm thresholds.

9. Maintenance

• Cleaning: Periodically clean the sensor surface to prevent buildup that could affect ultrasonic readings. Use a soft, damp cloth. Do not use abrasive cleaners.
• Connection Check: Occasionally check the power and sensor cable connections to ensure they are secure.
• Firmware Updates: Check the Tuya SmartLife app for any available firmware updates for your device to ensure optimal performance and access to new features.

10. Warranty and Support

Morayelec products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.