ME202W 5m Intelligent Water Tank Level Sensor Meter User Manual

1. Introduction

The Morayelec ME202W is an intelligent ultrasonic liquid level sensor designed for accurate and reliable monitoring of water and oil tanks. This advanced sensor integrates with smart home systems like Tuya SmartLife, offering remote monitoring and control capabilities via a mobile application. Its robust design ensures high durability and versatility across various applications, providing an efficient solution for fluid level management.

2. Product Features

• Reliable Distance Detection: Utilizes ultrasonic technology for precise liquid level measurement up to 5 meters.
• Smart Home Integration: Works with Tuya SmartLife APP, compatible with Alexa and Google Assistant for intelligent control.
• Remote Monitoring: View liquid level ratio, depth, status, and supply voltage directly from your smartphone.
• Alarm Functions: Configurable high and low liquid level alarms with real-time notifications.
• Pump Control: Features auto/manual pump control for supply or drainage modes.
• Flexible Installation: Lightweight and easy to install in various tank types.
• Durable Design: Built for long-term use in diverse environments.

3. Package Contents

Ensure all the following items are present in your package:

• ME202W Tank Level Monitor Unit
• Liquid Level Sensor (5m cable)
• AC/DC Power Adapter
• Mounting Screws
• User Manual (this document)

4. Specifications

5. Setup Guide

5.1 Power Connection

1. Connect the sensor cable to the Tank Level Monitor unit.
2. Connect the AC/DC power adapter to the Tank Level Monitor unit.
3. Plug the AC/DC power adapter into a suitable power outlet (100-240VAC).

5.2 Sensor Placement

Carefully place the liquid level sensor into the liquid to be measured. Ensure the sensor is fully submerged and positioned correctly for accurate readings. The sensor cable has a length of 5 meters, allowing for monitoring of deep tanks.

5.3 App Download and Network Reset

1. Scan the QR code provided in the package or search for “TUYA Smart APP” or “Smart Life APP” in your mobile device’s app store (available for Android and iOS).
2. Install the application on your smartphone.
3. To initiate network pairing, press and hold the button on the Tank Level Monitor unit for 5 seconds. The LED light will flash rapidly. Release the button. The device is now in network reset mode and ready to connect automatically.

5.4 Connecting Sensors to APP

1. Ensure your phone's Wi-Fi and Bluetooth are turned on.
2. Open the Tuya Smart or Smart Life app.
3. Tap on "Add Device" (usually a '+' icon) in the app. The app should automatically detect the ME202W Level Sensor.
4. Follow the on-screen prompts to add the device, including entering your home Wi-Fi network name and password.
5. Once connected, the app will display "Connection successful" and you can start monitoring.

6. Operation

6.1 Monitoring Liquid Levels

After successful connection, open the app to view real-time data:

• Liquid Level Ratio: Percentage of the tank filled.
• Liquid Level Depth: Actual depth of the liquid in meters.
• Liquid Level Status: Indicates Normal, Full alarm, or Lower alarm.
• Supply Voltage: Current power supply voltage.

6.2 Setting Alarms

You can configure maximum and minimum liquid level thresholds to receive alerts:

1. Navigate to the 'Setting' section within the device interface in the app.
2. Set 'Set Max' for the upper alarm threshold (e.g., 80%).
3. Set 'Set Min' for the lower alarm threshold (e.g., 20%).
4. Adjust 'Liquid maximum depth' to match your tank's actual maximum depth for accurate readings.
5. The app will provide real-time reminders on the status bar when an alarm condition is met.

6.3 Pump Control

The ME202W allows for integrated pump control:

• Auto Pump Control: Toggle between 'on-Auto' for automatic operation or 'off-Manual' for manual control.
• Pump Mode: Select 'on-Supply' to fill the tank or 'off-Drainage' to empty it.
• Pump Switch: Manually 'on-Start' or 'off-Stop' the pump.

6.4 Smart Scene Setup

Leverage the Tuya SmartLife app to create automated scenes:

1. Go to 'Settings' in the app and select 'Create Scene'.
2. Define conditions (e.g., 'When device status changes' to 'ME202W Liquid Level Sensor' reaches 'Upper level alarm').
3. Define actions (e.g., 'Then' 'Smart plug' 'Switch 1' to 'OFF' to stop a pump).
4. Save your scene to automate actions based on liquid levels.

7. Maintenance

• Regular Cleaning: Periodically check the sensor probe for any buildup or debris that might affect accuracy. Clean gently with a soft cloth if necessary.
• Cable Inspection: Inspect the sensor cable for any signs of wear, damage, or kinks. Ensure it is securely connected.
• Power Supply Check: Verify that the power adapter is functioning correctly and providing stable DC 5V power.
• App Updates: Keep the Tuya Smart or Smart Life app updated to the latest version for optimal performance and new features.
• Environmental Conditions: Ensure the Tank Level Monitor unit is protected from extreme weather conditions and direct sunlight, adhering to the specified operating temperatures of -20-70℃.

8. Troubleshooting

• Device Not Connecting to App:
  • Ensure your phone's Wi-Fi and Bluetooth are enabled.
  • Perform a network reset on the device by pressing and holding the button for 5 seconds until the LED flashes rapidly.
  • Verify that your home Wi-Fi network is 2.4GHz (the sensor may not support 5GHz networks).
  • Check Wi-Fi password accuracy during app setup.
• Inaccurate Readings:
  • Ensure the sensor probe is clean and free from obstructions.
  • Verify that the 'Liquid maximum depth' setting in the app matches the actual depth of your tank.
  • Check for any physical damage to the sensor cable or probe.
• No Alarms Triggering:
  • Confirm that 'Set Max' and 'Set Min' thresholds are correctly configured in the app.
  • Ensure app notifications are enabled on your smartphone.
• Pump Control Issues:
  • Check the 'Auto Pump Control' and 'Pump Mode' settings in the app.
  • Ensure any connected smart plugs or relays are properly configured and functional within the smart scene.

9. User Tips

• Clear Installation: Always follow the installation steps carefully, especially the network reset and app pairing, to ensure a smooth setup.
• Tank Depth Setting: Accurately setting the 'Liquid maximum depth' in the app is crucial for correct percentage and depth readings.
• Smart Automation: Utilize the app's smart scene features to automate pump operations based on liquid levels, enhancing convenience and preventing overflows or dry runs.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the contact details provided by your retailer or visit the official Morayelec website. Keep your purchase receipt as proof of purchase for any warranty claims.