1. Introduction
The TOMZN DDS238-1-W1 is an 18mm 63A WiFi smart bidirectional energy meter designed to monitor and record electrical energy consumption in a circuit. This device integrates a timer function and provides voltage and current protection, offering comprehensive power monitoring capabilities. It is compatible with smart home platforms like Tuya and Smart Life, allowing for remote control and data access via a smartphone application.
The image shows the compact DDS238-1-W1 energy meter alongside a smartphone displaying its monitoring application. The app interface shows positive active energy (kWh) over time, active power (kW), reactive power (kVar), power factor, current (A), voltage (V), frequency (Hz), temperature (°C), and available power (kWh). Buttons for 'Switch', 'Data', 'Timing', and 'Details' are visible at the bottom of the app screen.
2. Safety Information and Precautions
Warning: To avoid danger of suffocation, keep the packaging bag away from babies and children. Do not use this bag in cribs, beds, carriages, or playpens. This bag is not a toy.
This product is CE certified, indicating compliance with European safety, health, and environmental protection requirements.
This image illustrates various environments where the energy meter can be used, including industrial settings with motors, solar panel installations, residential homes, and commercial buildings like hotels, highlighting its versatility for active energy consumption measurement.
General Precautions:
- Do not place the device near flammable materials.
- Ensure adequate ventilation during operation to prevent overheating.
- Disconnect the device from power and store it properly when not in use for extended periods.
- All electrical installations and operations must be performed by a qualified electrical professional.
Applicable Regulations and Harmonized Standards:
- Low Voltage Directive 2014/35/EU
- Electromagnetic Compatibility Directive 2014/30/EU
- Restriction of the Use of Certain Hazardous Substances (RoHS) Directive 2011/65/EU
3. Setup and Installation
Installation of the DDS238-1-W1 energy meter requires careful attention to electrical connections. It is crucial that an electrical professional performs the installation to ensure safety and proper functionality.
Installation Steps:
- Upon receiving the product, verify its integrity.
- Have a qualified electrical professional perform the installation and wiring.
- Connect the equipment strictly in accordance with the provided wiring diagram specifications.
- After wiring, adjust the equipment parameters as per the instructions for your specific application.
The diagram shows the top terminal labeled 'L' (Live) for input and the bottom terminal labeled 'L N' (Live and Neutral) for output. The input Live wire (red) connects to the top terminal, and the output Live (red) and Neutral (blue) wires connect to the bottom terminals. Arrows indicate the direction of current flow from top to bottom.
App Connectivity:
This device supports connection to smart home applications such as Tuya or Smart Life. Download the respective app from your smartphone's app store and follow the in-app instructions to add and configure your DDS238-1-W1 meter to your home network.
4. Operating Instructions
The DDS238-1-W1 energy meter is designed to measure and record the electrical energy in the circuit. Once installed and connected to the app, you can monitor various electrical parameters and control the device remotely.
Key Functions:
- Energy Measurement: Measures and records active energy (kWh).
- Real-time Monitoring: View current, voltage, active power, reactive power, power factor, and frequency in real-time via the connected smartphone app.
- Timer Function: Set schedules for power on/off.
- Voltage/Current Protection: Provides protection against over-voltage and over-current conditions.
- Remote Control: Switch the power on or off remotely through the app.
Using the App:
The smartphone application (Tuya or Smart Life) provides a user-friendly interface to interact with your energy meter. The main screen typically displays current energy consumption and historical data. Navigation tabs at the bottom of the app allow access to different features:
- Switch: Manually turn the power on or off.
- Data: Access detailed energy consumption statistics and historical graphs.
- Timing: Configure schedules and countdown timers for automated control.
- Details: View device information and advanced settings.
Refer to the specific app's user guide for detailed instructions on setting up automations and interpreting data.
5. Maintenance
The DDS238-1-W1 energy meter is designed for low maintenance. Follow these guidelines to ensure its longevity and optimal performance:
- Cleaning: Gently wipe the exterior of the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Storage: If the device is not in use for an extended period, disconnect it from the power supply and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Ventilation: Ensure that the installation location allows for adequate airflow around the device to prevent heat buildup.
- Regular Checks: Periodically inspect the wiring connections to ensure they are secure and free from damage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on | No power supply; incorrect wiring; device fault. | Check power source. Verify wiring according to the diagram. If issues persist, contact support. |
| Cannot connect to Wi-Fi/App | Incorrect Wi-Fi password; device too far from router; router issues; app configuration error. | Ensure correct Wi-Fi password. Move device closer to router. Restart router. Re-attempt app configuration. Contact support for complex configuration issues. |
| Inaccurate energy readings | Incorrect calibration; wiring error; device fault. | Verify wiring. Ensure parameters are set correctly. If problem persists, contact support. |
| Device unresponsive | Power fluctuation; software glitch. | Disconnect power for 30 seconds, then reconnect. If unresponsive, contact support. |
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | TOMZN |
| Model Number | DDS238-1-W1 |
| Rated Voltage | 85-300V (AC) |
| Max Current | 63A |
| Frequency | 50/60Hz |
| Phase | Single Phase |
| Accuracy Class | Class 1 |
| Measuring Energy Range | 999999.9 kWh |
| Display Type | Digital Only |
| Power Supply | AC |
| DIY Supplies | Electrical |
| Certification | CE |
| App Compatibility | Tuya, Smart Life |
| Battery Included | No |
| High-concerned chemical | None |
The image displays the physical dimensions of the DDS238-1-W1 energy meter. The device measures 96mm in height, 18mm in width, and has a depth of 45mm. The top part of the device, which extends above the DIN rail, has a height of 35mm and a length of 72.5mm.
8. User Tips
- Configuration Assistance: If you encounter difficulties with the device's configuration, contact the seller or manufacturer's support for prompt assistance. Users have reported quick resolution of configuration problems by the seller.
- Professional Installation: Always ensure installation is carried out by a qualified electrical professional to guarantee safety and correct operation.
9. Frequently Asked Questions (FAQ)
- Q: How is active power differentiated between direct and reverse polarity in the data?
- A: The DDS238-1-W1 is a bidirectional energy meter. In the monitoring application, active power readings will typically indicate the direction of energy flow. Positive values usually represent energy consumed from the grid (direct), while negative values (if supported by the app's display) would indicate energy fed back into the grid (reverse), such as from solar panels. Refer to the specific app's data interpretation guide for precise details on how it displays bidirectional flow.
10. Warranty and Support
For detailed warranty information, please refer to the product's official documentation or contact the seller directly. This product is CE certified, ensuring it meets relevant European standards.
A comprehensive user manual in PDF format is available for download. You can access it here: DDS238-1-W1 User Manual (PDF). This document contains additional detailed instructions and diagrams.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact TOMZN Official Store customer service.