ME202W Smart Home WIFI Remote Liquid Water Tank Level Sensor Meter User Manual

1. Introduction

The ME202W Smart Home High Accuracy Underwater WIFI Remote Liquid Water Tank Level Sensor Meter is designed for precise and remote monitoring of liquid levels in various tanks, including water and oil tanks. This device integrates seamlessly with the Tuya SmartLife app, providing convenient control, real-time data, and customizable alerts directly to your mobile device. Its robust design and advanced ultrasonic technology ensure reliable performance for home automation and industrial applications.

2. Specifications

3. Package Contents

Please check the package for the following items:

• 1 x Liquid Level Sensor Unit (with probe and orange top unit)
• 1 x Power Adapter (100-240VAC to DC 5V)
• 1 x Sensor Cable (length may vary by model, e.g., 1m, 3m, 10m)
• 1 x User Manual (this document)

Note: Additional components like solar panels or Zigbee gateways may be included or required depending on the specific model variant purchased.

4. Setup Instructions

4.1. Physical Installation

1. Mount the Sensor Unit: Secure the orange top unit of the sensor to the top of your tank. Ensure it is stable and positioned correctly for the probe to hang freely into the liquid.
2. Insert the Probe: Carefully lower the sensor probe into the tank. The probe should hang vertically and not touch the bottom or sides of the tank.
3. Connect Power: First, connect the AC/DC adapter to a power outlet. Then, connect the adapter's output cable to the sensor unit.

4.2. App Download & Pairing

1. Download App: Download the “TUYA Smart APP” or “Smart Life APP” from your mobile device’s app store (available for Android and iOS).
2. Network Reset: Press and hold the button on the sensor unit for approximately 5 seconds. The LED light on the sensor will flash rapidly. Release the button to initiate network reset.
3. Enable Phone Features: Turn on both Wi-Fi and Bluetooth on your mobile phone.
4. Add Device in App: Open the downloaded app. Navigate to the “Add Device” section. The app will search for nearby devices.
5. Select Sensor: Select “ME202W Level Sensor” from the list of discovered devices.
6. Enter Wi-Fi Information: Enter your Wi-Fi network name and password when prompted. Ensure your Wi-Fi is 2.4GHz.
7. Confirm Connection: Once successfully connected, the red light on the sensor will stop flashing and remain steadily on. The app will confirm that the device has been added.
8. Access Interface: Proceed to the liquid level interface within the app to view data.

5. Operation

5.1. Monitoring Liquid Levels

Once connected, the Tuya SmartLife app provides real-time data on your liquid tank:

• Liquid Level Ratio: Displays the percentage of the tank filled.
• Liquid Level Depth: Shows the actual depth of the liquid in meters.
• Liquid Level Status: Indicates 'Normal', 'Full alarm', or 'Lower alarm' based on your settings.
• Supply Voltage: Shows the current voltage supplied to the sensor.
• Historical Data: View liquid level trends over Day, Month, or Year.

5.2. App Settings

Configure your sensor settings within the app:

• Set Installation Height: This is the distance from the sensor unit to the bottom of the tank. Accurate setting is crucial for precise depth readings.
• Set Max Level: Define the high liquid level threshold for 'Full alarm' notifications.
• Set Min Level: Define the low liquid level threshold for 'Lower alarm' notifications.
• Pump Working Mode: For models with pump control (e.g., ME201WC, ME201WCS), the default pump working mode is 'Refilling'. You can adjust this as needed.

5.3. Multi-Tank Monitoring

The app supports monitoring multiple tanks simultaneously, allowing you to manage various liquid storage units from a single interface.

5.4. Pump Control (Specific Models)

For models like ME201WC (Pump on/off by Wire) or ME201WCS (Pump on/off by Smart Plug), the sensor can be integrated with a pump to automate liquid level management. The app allows you to configure the pump's operation based on defined liquid levels.

6. Maintenance

To ensure optimal performance and longevity of your liquid level sensor, follow these maintenance guidelines:

• Regular Cleaning: Periodically inspect the sensor probe for any buildup of debris, sediment, or foreign matter. Gently clean the probe with a soft cloth and mild detergent if necessary. Ensure it is completely dry before re-installation.
• Cable Inspection: Check the sensor cable for any signs of wear, damage, or kinks. Ensure all connections are secure and free from corrosion.
• Power Supply Check: Verify that the power adapter is functioning correctly and providing stable power to the sensor. For solar-powered models (e.g., ME201WSP), ensure the solar panel is clean and receiving adequate sunlight, and check battery health periodically.
• Software Updates: Keep your Tuya SmartLife app updated to the latest version to benefit from new features and performance improvements.
• Environmental Conditions: Ensure the sensor operates within its specified temperature range (-20-70℃) to prevent damage.

7. Troubleshooting

If you encounter issues with your ME202W sensor, refer to the following common problems and solutions:

• Sensor not connecting to the app:
  • Ensure the power adapter is securely connected and the sensor is powered on.
  • Perform a network reset by pressing and holding the button on the sensor for 5 seconds until the LED flashes rapidly.
  • Verify that Wi-Fi and Bluetooth are enabled on your mobile phone.
  • Check that you have entered the correct Wi-Fi network name and password in the app. The sensor supports 2.4GHz Wi-Fi networks only.
  • Ensure the sensor is within range of your Wi-Fi router.
• Inaccurate liquid level readings:
  • Double-check the 'Installation height' setting in the app. An incorrect height will lead to inaccurate depth calculations.
  • Inspect the sensor probe for any physical obstructions or debris that might interfere with ultrasonic readings.
  • Ensure the probe is hanging freely and not touching the tank walls or bottom.
• No alarms or notifications:
  • Verify that the 'Set Max' and 'Set Min' alarm levels are correctly configured in the app.
  • Check your phone's notification settings to ensure that the Tuya SmartLife app is permitted to send notifications.
  • Ensure the sensor is connected to the network and reporting data.

8. User Tips

Here are some helpful tips from other users to enhance your experience with the ME202W sensor:

• The sensor offers fast connection speed and wide Wi-Fi coverage, making it reliable for various installations.
• Users appreciate the accurate water level measurement and the convenience of monitoring reminders.
• Its compact appearance makes it suitable for discreet installation.
• The touch switch feature eliminates the need for disassembly, making operation and maintenance more convenient.
• Leverage the mobile phone control for remote monitoring, allowing you to check liquid levels from anywhere.

9. Warranty and Support

The ME202W Smart Home WIFI Remote Liquid Water Tank Level Sensor Meter comes with a 1-year warranty from the date of purchase.

For technical support, product inquiries, or any assistance, please contact our support team:

• WhatsApp: +8617352882023
• Email: 936442401@qq.com

We also offer customized support including OEM, ODM, OBM, and software reengineering services.