SONOFF POWR3 Smart Power Meter Switch User Manual

1. Introduction

The SONOFF POWR3 series (POWR3, POWR316, POWR316D) are high-power smart switches designed for energy monitoring and remote control of your appliances. With a maximum load capacity of up to 25A/5500W (POWR3) or 16A (POWR316), these devices allow you to turn electronics on or off from anywhere using the eWeLink app, or through voice commands with Amazon Alexa and Google Home Assistant. They also provide detailed historical energy consumption data for up to 100 days, which can be exported for analysis. The POWR3 series integrates overload protection to ensure electrical safety.

SONOFF POWR3 packaging and device front view — Figure 1: SONOFF POWR3 packaging and device, highlighting eWeLink, Alexa, and Google Home compatibility.

2. Safety Information

Always ensure the power supply is disconnected before installation or maintenance.
Installation should be performed by a qualified electrician if you are unsure.
Do not exceed the maximum load current (25A/5500W for POWR3, 16A for POWR316/POWR316D) to prevent damage and fire hazards.
Keep the device away from water and high humidity environments.
Ensure proper grounding according to local electrical codes.

3. Product Overview

The SONOFF POWR3 is a compact smart switch designed for DIN rail mounting. It features input and output terminals, a physical ON/OFF button, a Wi-Fi indicator light, and a restart button. The POWR316D and POWR320D models include a digital display for real-time power readings.

SONOFF POWR3 device with labeled buttons and indicators — Figure 2: Front view of the SONOFF POWR3, showing the ON/OFF Button, Wi-Fi Indicator Light, and Restart Button.

SONOFF POWR316D with digital display and app interface — Figure 3: POWR316D model featuring a digital display for kWh and W, alongside the eWeLink app's energy overview.

4. Specifications

Feature	Specification
Model	POWR3 (POWR316, POWR316D variants)
Max. Load	25A/5500W (POWR3), 16A (POWR316/POWR316D)
Input	100-240V ~ 50/60Hz 25A Max
Output	100-240V ~ 50/60Hz 25A Max
Wi-Fi	IEEE 802.11 b/g/n 2.4GHz
Operating Systems	Android & iOS
Working Temperature	-10°C ~ 40°C
Material	PC V0
Dimensions	162x122x45.5mm
Battery Included	Yes
Wireless Communication	Yes (WiFi, Zigbee for some variants)
State of Assembly	Ready-to-Go

Detailed specifications and dimensions of SONOFF POWR3 — Figure 4: Visual representation of POWR3 specifications and dimensions.

5. Installation

The SONOFF POWR3 is designed for easy installation within your electrical system, typically on a DIN rail. Ensure all power is off before proceeding.

5.1 Wiring Schematic

Connect the POWR3 according to the provided wiring diagram. It is crucial to connect the POWR3 to the back of the air switch, not directly to the grid, for proper functionality and safety.

SONOFF POWR3 detailed wiring diagram — Figure 5: Installation Schematic showing how to wire the POWR3 with a power meter, air switch, and fuses. Note the 35mm DIN rail compatibility.

5.2 Physical Mounting

Mount the POWR3 onto a standard 35mm DIN rail within your electrical panel. Ensure secure connections for all wires.

6. App Setup and Pairing

To utilize the smart features of your SONOFF POWR3, you need to set it up with the eWeLink app.

Download eWeLink App: Download and install the eWeLink app from your smartphone's app store (available for Android and iOS).
Power On: After wiring, power on the SONOFF POWR3. The Wi-Fi indicator light should start blinking, indicating it's in pairing mode.
Quick Pairing: Open the eWeLink app, tap the '+' icon to add a device, and select "Quick Pairing" to connect your POWR3. Follow the on-screen instructions to complete the pairing process.

Quick Start guide for SONOFF POWR3 app pairing — Figure 6: Quick Start steps: Download eWeLink App, Wiring and Power On, Select "Quick Pairing" in the app.

7. Operation

7.1 Remote ON/OFF Control

Once paired, you can remotely turn your connected appliances on or off from anywhere using the eWeLink app. This feature helps ensure safety and save on electricity bills, especially when you are away from home.

eWeLink app interface for remote power control — Figure 7: App interface demonstrating one-tap remote power cut-off.

7.2 Power Metering and Energy Monitoring

The POWR3 is capable of acting as a smart meter, measuring active power, current, and voltage of your appliances. It tracks and stores historical energy consumption data for up to 100 days, which can be exported as a CSV file from the eWeLink app.

eWeLink app showing power consumption data and export function — Figure 8: eWeLink app displaying daily power consumption and the option to export data.

eWeLink app showing real-time power consumption measurement — Figure 9: App interface for measuring device power consumption in real-time.

7.3 Scheduling and Timers

Set schedules and timers within the eWeLink app to automatically turn devices on or off at specific times, optimizing energy usage and convenience.

7.4 Voice Control Integration

The POWR3 is compatible with Amazon Alexa, Google Home Assistant, SmartThings, and Alice. Link your eWeLink account to these platforms and use voice commands to control your devices.

Alexa Energy Dashboard integration with POWR3 — Figure 10: Alexa Energy Dashboard showing energy usage tracking with POWR3.

7.5 Home Assistant Integration

Multiple POWR3 devices can be centrally controlled, and their metadata and power consumption data can be displayed on Home Assistant (Hass) through the eWeLink add-on.

Home Assistant integration with eWeLink add-on — Figure 11: Laptop screen showing Home Assistant interface with eWeLink add-on displaying POWR3 power data.

8. Advanced Features (eWeLink Advanced Plan)

The eWeLink Advanced Plan unlocks additional functionalities for your SONOFF devices, including:

eWeLink Web: Cross-platform control and data visualization from a web browser.
IFTTT Integration: Connect with IFTTT for enhanced automation possibilities.
Historical Records: Access and download more extensive historical data.
Larger Capacity: Share SONOFF devices with over 100 users.
Camera App/Gateway: Convert old phones into IP cameras or view local camera video.
Keyboard Shortcuts: Activate scenes with keyboard shortcuts.

eWeLink Advanced Plan features overview — Figure 12: Overview of features available with the eWeLink Advanced Plan.

9. Maintenance

Regularly check wiring connections for tightness and signs of wear.
Keep the device clean and free from dust. Use a dry cloth for cleaning.
Ensure adequate ventilation around the device to prevent overheating.

10. Troubleshooting

10.1 Overload Protection

The POWR3 features built-in overload protection. If an abnormality in voltage, current, or power of loads is detected, the power will be automatically cut off to prevent device damage and danger. Check the connected appliance and reset the POWR3 if an overload occurs.

SONOFF POWR3 with overload protection feature — Figure 13: POWR3 highlighting the overload protection feature for electrical safety.

10.2 Device Not Pairing

Ensure your Wi-Fi network is 2.4GHz. The device does not support 5GHz Wi-Fi.
Check if the Wi-Fi indicator light is blinking rapidly, indicating pairing mode. If not, press and hold the restart button until it blinks.
Ensure your smartphone is connected to the same 2.4GHz Wi-Fi network during pairing.
Move the device closer to your Wi-Fi router.

10.3 Remote Control Issues

Verify your internet connection and the device's Wi-Fi connection.
Check if the eWeLink app is updated to the latest version.
Ensure the device is not offline in the eWeLink app.

11. User Tips

For accurate energy monitoring, ensure the POWR3 is correctly installed and calibrated if necessary.
Utilize the scheduling feature to automate high-power appliances during off-peak hours to save on electricity costs.
Regularly review your energy consumption data in the eWeLink app to identify energy-hungry devices and optimize usage.
Consider using the eWeLink Advanced Plan for more comprehensive data analysis and smart home integrations.

12. Warranty and Support

For warranty information and technical support, please refer to the official SONOFF website or contact your retailer. Keep your purchase receipt as proof of purchase.