1. Welcome
The EARU EASEM-D Multi-Circuit Power Meter helps you monitor the amount of electricity consumed and produced in your facility by connecting current transformers (CT clamps) to the power cable.
This guide provides an overview of the product and assists you with the initial setup and installation.
Key Features:
- Tuya compliant: Supports automation with other Tuya devices.
- Compatible with Single, Split-Phase 120/240VAC, and 3-Phase/4-wire 480Y/277VAC electricity systems.
- Remotely monitors whole home energy and up to 16 individual circuits with 50A Sub CTs (e.g., solar, lighting, receptacles).
- Bi-Directional measurement.
- Real-time measurement of Voltage, Current, Power Factor, Active Power, and Frequency.
- Historical data of Energy Consumed and Energy Production.
2. Safety Handling
WARNING: Failure to follow these safety notices could result in fire, electric shock, other injuries, or damage to the Power Meter and other property. Read all the safety notices below before using the Power Meter.
- 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.
Important Safety Information for Installation:
- The Power Meter must be installed and serviced only by qualified electrical personnel.
- Do not touch the terminals of the device during testing.
- Turn off the power before connecting or disconnecting it to an auxiliary device.
- Double check the power is off with a properly rated voltage sensing device.
Failure to follow these instructions will result in death or serious injury.
3. Get to Know Your Device
The EARU EASEM-D Multi-Circuit Power Meter consists of the main unit and various accessories. Familiarize yourself with each component:
Figure 1: Product Components
Main Unit Overview:
Figure 2: Main Unit Ports
- LED Indicator: Provides status information (see Troubleshooting section).
- 3.5mm Audio Ports (Top): Inputs for Main CTs (L1/A, L2/B, L3/C).
- 2.5mm Audio Ports (Sides): Inputs for Sub CTs.
- Antenna Connector: For connecting the external antenna.
- Power Input Port (Bottom): For connecting the power cable.
- Reset Button: Used for resetting the device (see Troubleshooting section).
4. Technical Specifications
Figure 3: Product Dimensions and Parameters
Wireless Connectivity
| Feature | Specification |
|---|---|
| Wi-Fi | 802.11 b/g/n @ 2.4GHz |
| RF Characteristics | Operating frequency: 2.4GHz, External magnetic antenna |
Physical Specifications
| Feature | Specification |
|---|---|
| Operating Voltage | 90~480 Vac 50/60 Hz |
| Rated Current | 200A / 300A (depending on model) |
| Measurement Accuracy | ±2% |
| Supported Systems | Single-Phase up to 277VAC line-neutral, Split-Phase 120/240VAC, Three-Phase up to 480Y/277VAC (No Delta/wye/Y/Star Connection) |
| Reporting Cycle | Every 15 seconds |
| Operating Temperature | -20℃~+55℃ |
| Humidity | ≤ 90% non-condensing |
| Dimensions | 111.3(L) x 81.2(W) x 41.4(H) mm |
| Battery Included | No |
| High-concerned chemical | None |
| Certification | CE, FCC |
CT Clamp Specifications:
| Model | L (mm) | W (mm) | H (mm) | Φ (mm) | Weight (g) |
|---|---|---|---|---|---|
| 50A | 26 | 24 | 42 | 10 | 57 |
| 200A / 300A | 34 | 45 | 66 | 24 | 160 |
5. Installation
Note: The Power Meter must be installed and serviced only by qualified electrical personnel. Always turn off power before installation.
5.1. Turn Off Power
You need to turn off the main breaker in your electric panel to shut off all of the power in your home. However, the service mains are always live! Then remove screws securing the cover to the panel to access the circuit breakers.
Figure 4: Turning off Main Breaker
5.2. Find a Spot for Power Meter
Find a suitable spot for the Power Meter. You can fit it within your electrical panel or use the mounting bracket to fix it on the wall outside the electrical panel if there is no room.
Figure 5: Mounting Options
5.3. Install the Antenna
Locate the External Antenna outside the electrical panel to ensure that the Power Meter signal is not blocked by metal. The base of the antenna has a magnet and can be adsorbed on iron materials. After that, screw the External Antenna to the Antenna connector.
If you install the Power Meter into the electrical panel, you can use a screwdriver to punch out a knockout cover in the electrical panel. Then feed the External Antenna cable through the hole.
Figure 6: Antenna Installation
5.4. Clamp Main CTs around Service Mains
1. Open the clasps on the Main CTs (3.5mm audio plug) to see the arrow (P1→P2 or K→L) or find it on the sticker on the outside of the clamp. This indicates the direction of the CT.
Figure 7: CT Clamp Direction
2. Clamp one Main CT on each main service line. Make sure the arrow on the CT must point towards the breakers! Your system may have 1, 2, or 3 main service lines, and a corresponding number of Main CTs are required.
Figure 8: Main CT Installation (3-Phase)
3. If you have Line/Service-side tap solar, the Main CT must be clamped between the electricity meter and incoming feeds from the inverter.
Figure 9: Main CT Installation with Solar
4. Insert each 3.5mm audio plug of the Main CT into the corresponding audio jack on the top of the Power Meter. The jacks are labeled L1/A, L2/B, and L3/C.
Figure 10: Main CT Plug Connections
5.5. Connect the Power Cable
Connect the power cable into the bottom of the main unit until it clicks into place securely.
Figure 11: Power Cable Connection
Secure the N wire from the power cable to the neutral bus bar and the L1 wire to the L1/A breaker pole.
For 3-Phase systems, secure the L2, L3 wires corresponding to the L2/B, L3/C breaker poles.
For Split-Phase systems, only secure the L2 wire to the L2/B breaker pole. The L3 wire needs to connect to the neutral bus bar.
For Single Phase systems, the L2 and L3 wires need to connect to the neutral bus bar.
5.6. Clamp Sub CTs around the Circuit (Optional)
If you don't have Sub CTs (2.5mm audio plug), skip this step.
1. Open the clasps on the Sub CTs to see the arrow (P1→P2 or K→L) or find it on the sticker on the outside of the clamp. This indicates the direction of the CT.
Figure 12: Sub CT Clamp Direction
2. Clamp each Sub CT around the circuit you wish to monitor. Make sure the arrow on the CT must point towards the load or Inverter!
Figure 13: Sub CT Installation
Note: If the circuit you are monitoring can generate energy (such as an Inverter), after all wiring is completed, you must manually set the phase of the circuit in the app settings, otherwise the power measurement will be incorrect.
3. Insert each 2.5mm audio plug of the Sub CT into the audio jack on the side of the Power Meter. Remember the number of the audio jack connected to the circuit you are measuring, and you may need to match it in your app.
5.7. Wiring Reference Diagrams
Refer to the following diagrams for common wiring configurations:
Figure 14: 3-Phase Wiring (Most in European 3-phase homes and US Commercial systems)
Figure 15: Split-Phase Wiring with Load Monitoring (Most in US homes)
Figure 16: Split-Phase Wiring with Solar Monitoring (Most in US homes)
Figure 17: Single Phase Wiring (Most in European 1-phase homes)
6. Mounting
The mounting bracket supports DIN-rail installation. You can click the three hooks on the mounting bracket onto the DIN-rail.
Figure 18: Mounting Bracket to DIN-Rail
Locate the hooks of the mounting bracket and line up the hooks with the mounting holes on the Power Meter. Fit the hooks into the mounting holes as shown in the picture. Installation is now completed.
7. Configure Network
The device uses the Smart Life app for network configuration and monitoring. Note that the network cannot support 5GHz Wi-Fi!
7.1. Download App
Please download the application: Smart Life from your App Store or App Market. You can also scan the QR code below to download and install.
Figure 19: Smart Life App QR Code
7.2. Network Configuration Methods
Here are three methods for device network configuration:
Method 1: Automatic Scan (Recommended)
- After the device is installed, power on the power clamp.
- Reset the device: Press and hold the reset button for 5 seconds until the LED indicator flashes red 3 times quickly.
- Open the Smart Life app and click the 'Scan' button in the upper right corner of the App Home page.
- The app will automatically scan for nearby devices and a prompt box will pop up. Click 'Add'.
- Enter your home Wi-Fi account and password (2.4GHz only) and click 'Next'.
- Wait for the device to be added and click 'Done'. The device has successfully configured the network.
Video: Installation and Network Configuration Guide
Method 2: Manual Scan with QR Code
- After the device is installed, power on the power clamp.
- Reset the device: Press and hold the reset button until the LED flashes red quickly 3 times.
- Open the manual to page 20 to see the QR code.
- Open the Smart Life app and click the 'Scan' button in the upper right corner of the App Home page. Scan the QR code from the manual.
- A prompt box will pop up. Click 'Add'.
- Enter your home Wi-Fi account and password (2.4GHz only) and click 'Next'.
- Wait for the device to be added and click 'Done'. The device has successfully configured the network.
Method 3: Manual Add with Bluetooth
- After the device is installed, power on the power clamp.
- Make sure the LED indicator is flashing green. If not, please reset it.
- Open the Smart Life app and turn on Bluetooth on your phone.
- Open the app and click the '+' on the top right of the home page to add the device.
- Find the 'Energy' option and click 'Switch Module (Wi-Fi)' in the subdirectory 'Breaker'.
- Enter your home Wi-Fi account and password (2.4GHz only) and click 'Next'.
- Click 'Confirm the indicator is blinking'.
- The device indicator light flashes quickly, click 'Blink Quickly'.
- Wait for it to be added and click 'Done'. The device has successfully configured the network.
8. Operating the Device via Smart Life App
Once successfully configured, you can monitor and control your power meter through the Smart Life app.
8.1. Real-time Monitoring
The app provides real-time data on energy consumption and production. You can view:
- Net Usage, Solar Usage, Home Usage.
- Energy 'To Grid' and 'From Grid'.
- Total Active Power, Total Current, Frequency.
- Individual circuit data (Active Power, Current, Voltage).
Figure 20: App Home Screen - Energy Overview
8.2. Historical Data and Charts
Access historical data and charts to track energy trends over time (Day, Week, Month, Year).
Figure 21: App Charts and Historical Data
8.3. Settings and Configuration
Within the app settings, you can configure various parameters:
- Circuit Setting: Enable or disable individual circuits for monitoring.
- Solar Setting: Configure settings related to solar production monitoring.
- Rate: Set unified price per kWh and billing cycle start.
- Unit: Select energy units (e.g., kWh, Amps).
Figure 22: App Settings
8.4. Voice Control
The device supports voice control through Google Assistant and Amazon Alexa, allowing for hands-free operation.
Figure 23: Voice Control Integration
9. Maintenance
The EARU EASEM-D Multi-Circuit Power Meter is designed for low maintenance. Keep the device clean and free from dust. Ensure all connections are secure. No user-serviceable parts are inside the main unit; do not attempt to open or repair it.
10. Troubleshooting
10.1. Reset Button
Press and hold the reset button for 5 seconds until the LED indicator flashes red 3 times quickly to restore the Power Meter to default factory settings (energy data will not be cleared).
If you want to clear the energy data, please delete the device and wipe data on the app and then add it again.
10.2. LED Indicator Status
The LED status gives the following information about the Power Meter:
| LED Status | What it means |
|---|---|
| Green LED blinking | Waiting for pairing |
| Green LED solid on | Device has connected to cloud. |
| Red LED solid on | Device is connected to the router, but failed to connect to the cloud. |
| Red LED blinking | Wi-Fi has been configured, but failed to connect to the router. |
11. User Tips
- Home Assistant Integration: As the device is Tuya compliant, it may be possible to integrate it with Home Assistant or other smart home platforms that support Tuya devices. Check the specific integration guides for your chosen platform.
- Wi-Fi Network: Remember that the device only supports 2.4GHz Wi-Fi networks. Ensure your router is configured to provide a 2.4GHz band or that your phone is connected to the 2.4GHz band during setup.
12. Warranty and Support
For warranty information, technical support, or service inquiries, please contact EARU customer service or refer to the official product page where you purchased the device. Keep your purchase receipt as proof of purchase.