1. Introduction
This manual provides detailed instructions for the installation, operation, and troubleshooting of your Tuya Smart WiFi Energy Clamp Meter. This device is designed to monitor electricity consumption and generation bidirectionally, providing real-time data and alarm functions via the Tuya Smart or Smart Life application.
2. Safety Information
2.1. Safety Installation
WARNING: Failure to follow these instructions may result in death or serious injury.
- The power clamp must be installed and serviced only by qualified electrical personnel.
- Do not touch the terminals of the device during testing.
- Turn off all the power supply for this equipment before installing.
- Make sure that the power supply is off before connecting or disconnecting it to an auxiliary device.
- Always use a properly rated voltage sensing device to confirm power is off.
Symbol indicating danger of electric shock.
2.2. Safety Handling
WARNING: Failure to follow these safety notices could result in fire, electric shock, other injuries, or damage to the Power Clamp and other property. Read all the safety notices below before using the Power Clamp.
- Avoid high humidity or extreme temperatures.
- Avoid long exposure to direct sunlight or strong ultraviolet light.
- Do not drop or expose the unit to intense vibration.
- Do not disassemble or try to repair the unit on your own.
- Do not expose the unit or its accessories to flammable liquids, gases or other explosives.
2.3. Uninstall the Clamp
WARNING: FOR SAFETY. If you need to remove the current transformer clamp, please be sure to turn off the power of the measuring device first, otherwise there is a risk of electric shock.
3. Specifications
| Attribute | Value |
|---|---|
| Model | PJ-1103A, PJ-1103C |
| Input Voltage | AC 100-240V 50/60Hz |
| Measuring Range | 0.2-80A |
| Wireless Frequency | WiFi 2.4Ghz (not support 5Ghz) |
| Error | Within ±2% |
| Module Size | 50*45*23mm |
| Clamp Diameter | 10mm |
| Clamp Cable Length | 1m |
| Ambient Temperature Range | -10 ~ 50 degree (-10 °C ~ +55 °C) |
| Certification | CE, RoHS |
| App Name | Tuya Smart, Smart Life |
| Single-phase | L+N |
| Channel Option | 1 or 2 Channels |
| Direction | Bidirectional 2 Way |
| New Function | Set Threshold Value |
| Alarm | App Alarm, Device Buzzer |
Detailed technical specifications of the energy meter.
Physical dimensions of the energy meter module and current transformer (CT) clamp.
4. Package Contents
- 1x Tuya Smart WiFi Energy Clamp Meter Module (PJ-1103A or PJ-1103C)
- 1x or 2x Current Transformer (CT) Clamps (depending on channel option)
The energy meter module shown with two current transformer (CT) clamps.
The energy meter module shown with one current transformer (CT) clamp.
Options for 1-channel or 2-channel energy monitors, each with corresponding CT clamps.
5. Setup Guide
5.1. Download the App
To control and monitor your energy meter, you need to download either the 'Smart Life' or 'Tuya Smart' app. Scan the QR codes below or search for the apps in your device's App Store (iOS), Google Play Store (Android), or Android Market.
QR codes for downloading the Smart Life and Tuya Smart applications.
5.2. Add the WiFi Meter to the App
- Ensure your mobile device is connected to a 2.4 GHz Wi-Fi network. The meter does not support 5 GHz Wi-Fi.
- Press the reset button on the meter for approximately 5 seconds until the red indicator light flashes quickly.
- Open the 'Smart Life' or 'Tuya Smart' app.
- In the app, navigate to 'Add Device' and select 'Smart Electric Meter (Wi-Fi)'.
- Follow the on-screen prompts to connect the device to your Wi-Fi network, entering your Wi-Fi password when requested.
- Once connected, click 'Done' to complete the setup.
Screenshot showing the process of adding the WiFi meter in the app, including Wi-Fi selection.
Screenshot confirming successful addition of the WiFi dual meter to the app.
5.3. Wiring Diagram
Proper wiring is crucial for accurate measurement and safe operation. Please consult a qualified electrician if you are unsure about any steps.
5.3.1. Wiring for Energy Consumption and Generation (e.g., with Solar Panel)
Diagram illustrating how to wire the energy meter to measure both energy consumption from the grid and energy generation from a solar panel system.
Note: When installing, please ensure that the circuit measured by the CT clamp is in the same phase as the circuit powered by the module.
5.3.2. Wiring for 'from Grid' or 'to Grid' Measurement
Diagram showing the wiring configuration to measure energy flow either from the grid or to the grid, typically used in solar installations.
Note: When installing, please ensure that the circuit measured by the CT clamp is in the same phase as the circuit powered by the module.
6. Operating Instructions
6.1. Monitoring Electricity Usage
Once the meter is installed and connected to the app, you can monitor various parameters:
- Total forward energy: Total energy consumed.
- Total reverse energy: Total energy generated/exported.
- Voltage: Current voltage.
- Total Power: Current power consumption/generation.
- Frequency: Grid frequency.
- Channel A/B: Detailed active power, current, and power factor for each channel.
App interface displaying real-time voltage, current, and power when the device is working.
App interface showing energy usage and associated costs over time.
6.2. Forward and Reverse Energy Measurement
The meter can distinguish between energy consumption and generation. To ensure correct readings, the direction of the CT clamp must be adjusted based on your system:
- If your solar system is generating power, adjust the clamp's direction until the App shows 'Generating power'.
- If your solar system is not working (or you are consuming from the grid), adjust the clamp's direction until the App shows 'Consuming'.
- Perform this adjustment for each channel (CT clamp) individually.
App screenshots demonstrating the 'Generating power' and 'Consuming energy' displays, indicating correct CT clamp orientation.
WARNING!!! FOR SAFETY. If you need to remove the current transformer clamp, please be sure to turn off the power of the measuring device first, otherwise there is a risk of electric shock.
6.3. Buzzer Warning and Threshold Setting
The meter features a buzzer alarm and app notifications when monitored current, voltage, or power exceeds user-defined thresholds.
- In the app, navigate to the 'Setting' menu for your device.
- You can enable or disable the 'Buzzer' function.
- Set specific thresholds for 'Over power', 'Over voltage', 'Under voltage', and 'Over current' for each channel (A and B).
- When a threshold is exceeded, the device buzzer will sound, and the app will send an alarm message.
App interface for enabling the buzzer warning and viewing alarm history.
App interface for configuring alarm thresholds for power, voltage, and current, as well as report rate settings.
7. Maintenance
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to moisture, direct sunlight, or extreme temperatures.
- Regularly check wiring connections for security and integrity.
- Do not attempt to open or repair the device yourself. Refer to qualified personnel for service.
8. Troubleshooting
8.1. Q: After I configure it with the App, why does the App show 'Current and Power as '0''?
A: The clamp can only sense current if you put a device's wire (either live wire or neutral wire, but NOT both) through the clamp, and the device is turned on. Ensure the wire is correctly placed within the CT clamp and the monitored appliance is active. The App will then display current and power values.
App screen showing zero current and power, indicating a potential issue with CT clamp placement or appliance status.
8.2. Q: After I change the report rate to less than 10 Seconds, why does my App seem stuck?
A: This usually indicates a slow network return. Please sign out of the App and re-enter. Change the report rate back to 10 seconds, and it should function correctly.
App screen highlighting the report rate setting, which can cause issues if set too low on a slow network.
8.3. Q: How to clear App electricity data?
- Press the reset button on the device 5 times quickly. The indicator LED should blink quickly. If it fails to blink, repeat the action of pressing the button 5 times again until the LED blinks quickly.
- After 10 seconds, go to the App page for the device and click 'Disconnect and wipe data'.
App screen showing the 'Disconnect and wipe data' option for clearing electricity data.
9. User Tips
- Calibration: For maximum accuracy, calibrate the voltage in the app settings using a reliable multimeter. Some users report needing to adjust the voltage offset slightly (e.g., to 0.993) for readings to match utility meters.
- App Choice: While both Tuya Smart and Smart Life apps work, some users note that the Tuya app might offer more unlocked features, such as graphs, compared to Smart Life where certain features might be paid.
- Bidirectional Measurement: This device excels at distinguishing between energy injection (generation) and consumption, making it ideal for monitoring solar panel systems. Ensure CT clamp direction is correctly set in the app.
- Alarm Configuration: Utilize the customizable alarm thresholds for over/under voltage, over current, and over power. The audible buzzer and app notifications can be very useful for immediate alerts.
- Advanced Firmware: The device's WiFi board (Tuya T1-M) is reported to be compatible with OpenBeken firmware for advanced users seeking custom integrations.
- Home Assistant Integration: For users with Home Assistant, integration is possible using Tuya Local via the HACS install.
- Multiple Loads: If you do not have a photovoltaic system, you can still use the two channels to measure two different loads independently.
- Minimum Power: Be aware that the device may have a minimum power threshold (e.g., 12W) below which it might not register consumption.
10. Warranty and Support
For detailed warranty information and further technical support, please refer to the official product documentation. A comprehensive user manual in PDF format is available for download: