1. Introduction
The Yieryi SGS05 Digital Water Flow Meter is a versatile device designed to monitor water consumption and flow speed in various outdoor applications such as gardening, lawn watering, and irrigation. Featuring a clear LCD display and four distinct measurement modes, it provides accurate data to help manage water usage efficiently. This manual will guide you through the setup, operation, maintenance, and specifications of your SGS05 water flow meter.
2. Product Overview
2.1 Key Features
- Four Measurement Modes: Single, Flow, AVG (7-day average), and Total water consumption.
- Large LCD Display: For easy and convenient viewing of data.
- Unit Conversion: Switch between Liters (L) and Gallons (GAL).
- No Operation Sleep Mode: Automatically conserves battery when not in use.
- Low Battery Alert: Notifies you when battery replacement is needed.
- Easy Handling: User-friendly design for simple operation.
- IPX5 Waterproof Rating: Suitable for outdoor use, resistant to splashes and rain.
- Water Inlet Filter: Effectively blocks sand and stones to prevent clogging.
- Standard Connectivity: 3/4" threaded connector fits all standard faucets and garden hoses.
2.2 Components
Familiarize yourself with the main components of your SGS05 water flow meter:

Image: Diagram illustrating the components and dimensions of the SGS05 Water Flow Meter, including the 3/4" Faucet Connector, Display Screen, Button, and 3/4" Outlet.
- 3/4" Faucet Connector: Connects to your water source.
- Display Screen: Shows measurement data and mode.
- Button: Used to switch between measurement modes.
- 3/4" Outlet: Connects to your garden hose or nozzle.
3. Setup
3.1 Battery Installation
The SGS05 water flow meter requires one CR2032 3V battery (not included).

Image: View of the open battery compartment, indicating where to insert the CR2032 battery.
- Locate the battery compartment cover on the side of the device.
- Gently pry open the cover.
- Insert one CR2032 3V battery, ensuring the positive (+) side faces upwards.
- Close the battery compartment cover securely.
- The device should power on and display information.
3.2 Installation to Faucet/Hose
The SGS05 is designed for easy connection to standard 3/4" threaded faucets and hoses.

Image: The SGS05 Water Flow Meter securely attached to a standard outdoor faucet.
- Ensure your faucet is turned off.
- Screw the 3/4" Faucet Connector of the SGS05 onto your outdoor faucet until hand-tight.
- Attach your garden hose or nozzle to the 3/4" Outlet of the SGS05, screwing it on until hand-tight.
- Ensure all connections are secure to prevent leaks.
4. Operating Modes
The SGS05 features four distinct measurement modes, easily switchable with a single button press.

Image: Visual representation of the four flow modes (Single, Flow, AVG, Total) and their respective display formats.
4.1 Single Mode
Measures the water consumption for a single watering session or pass. The display will show the volume of water used since the last reset or start of flow.

Image: The SGS05 in Single Mode, displaying water consumption during manual watering of garden plants.
4.2 Flow Mode
Measures the real-time water flow speed. When water flows through the meter, the LCD will activate and show the current flow speed in GAL/Min or L/Min.

Image: The SGS05 in Flow Mode, showing real-time water flow speed while connected to a sprinkler system.
4.3 AVG Mode
Displays the daily average water consumption over the last 7 days. This mode helps you track your weekly water usage trends.

Image: The SGS05 in AVG Mode, displaying the average daily water consumption, accompanied by a graph showing watering usage over the last 7 days.
4.4 Total Mode
Displays the total accumulated water consumption. This mode tracks overall water usage up to a maximum of 99999L / 999999GAL.

Image: The SGS05 in Total Mode, showing the cumulative water consumption while connected to a hose filling a swimming pool.
4.5 Unit Conversion
The device supports unit conversion between Liters (L) and Gallons (GAL). To switch units, press and hold the button for a few seconds until the unit changes on the display.
5. Maintenance
5.1 Battery Replacement
When the low battery alert appears on the display, it's time to replace the CR2032 3V battery. Follow the steps in Section 3.1 for battery installation.
5.2 Cleaning the Water Inlet Filter
The SGS05 includes a water inlet filter to prevent debris from entering the device. Over time, this filter may accumulate sand and stones, potentially affecting accuracy or flow. Regularly inspect and clean the filter as needed.

Image: A detailed view of the water inlet filter mesh, designed to block sand and stones.
- Disconnect the water flow meter from the faucet.
- Unscrew the inlet connector.
- Carefully remove the filter mesh.
- Rinse the filter under running water to remove any debris.
- Reinsert the clean filter and reattach the connector securely.
5.3 Waterproofing
The SGS05 has an IPX5 waterproof rating, meaning it is protected against low-pressure water jets from any direction. While suitable for outdoor sun and rain, avoid submerging the device in water or exposing it to high-pressure water streams.
6. Troubleshooting
- No Display / Blank Screen:
- Check if the battery is correctly installed and has sufficient charge. Replace the CR2032 battery if necessary.
- Ensure the device is not in sleep mode (it should activate with water flow).
- Inaccurate Readings:
- Check the water inlet filter for clogging and clean it if needed (refer to Section 5.2).
- Ensure the connections are tight and there are no leaks, which could affect flow measurement.
- Verify that the water flow rate is within the specified range (1~45.5 L/Min).
- Leaks at Connections:
- Ensure all threaded connections are hand-tight.
- Check for damaged O-rings or washers and replace if necessary.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | SGS05 |
| Material | Plastic |
| Type | Garden Water Timer / Water Flow Meter |
| Waterproof Rating | IPX5 |
| Water Flow Rate | 1~45.5 L/Min (12.0 GAL/Min) |
| Maximum Water Consumption | 99999 L / 999999 GAL |
| Working Pressure | 0.5~8 Bar |
| Maximum Flow Rate | 45.5 L/Min or 12.0 GAL/Min |
| Battery | CR2032 3V (Batteries Not Included) |
| Thread | 3/4" Standard Faucet Hose |
| Dimensions | 90mm * 50mm * 50mm |
| Product Weight | 93g (without packaging) |
8. User Tips
- Regular Filter Checks: To maintain accurate readings and prevent flow issues, periodically check and clean the water inlet filter, especially if you notice a decrease in water pressure or inconsistent measurements.
- Battery Life: The CR2032 battery typically offers long life, but keep a spare on hand to avoid interruptions in monitoring. The low battery alert will provide ample warning.
- Secure Connections: Always ensure the meter is tightly screwed onto both the faucet and the hose to prevent leaks and ensure proper water flow measurement.
9. Warranty and Support
For any questions, technical assistance, or warranty claims regarding your Yieryi SGS05 Digital Water Flow Meter, please contact the seller or manufacturer directly. Keep your purchase records for reference.