Sonoff POWR3 High Power Wi-Fi Smart Switch w/ Energy Monitoring

The Sonoff POWR3 is rated for a maximum continuous load of 25 Amps at 100-240V AC, which translates to 5500 Watts. This makes it suitable for controlling major home appliances like electric water heaters, space heaters, air conditioners, and large power tools. Always ensure your appliance's rated current and wattage are below these limits for safe operation.

Yes, the Sonoff POWR3 requires a neutral wire for its internal circuitry and power metering to function. It must be installed in-line with the live (hot), neutral, and load wires of the appliance you wish to control. Always turn off power at the circuit breaker before installation and consult a qualified electrician if you are unsure about your home's wiring setup.

Yes, the POWR3 supports Local Area Network (LAN) control mode within the eWeLink app, allowing you to turn the relay on and off as long as your phone and the switch are on the same Wi-Fi network. The physical button also provides manual control. However, remote access from outside your home, voice commands, and timer schedules that rely on cloud sync require an active internet connection.

First, power the device by wiring it correctly to your mains supply. Press and hold the physical button for about 5 seconds until the LED indicator starts flashing rapidly, indicating AP (Access Point) mode. Open the eWeLink app, tap 'Add Device,' and select the POWR3 from the list. Follow the in-app prompts to connect your phone to the device's temporary Wi-Fi network and then select your home's 2.4GHz Wi-Fi SSID and enter the password to complete binding.

The eWeLink app displays real-time power (W), voltage (V), current (A), and power factor. It also shows daily and monthly total energy consumption in kilowatt-hours (kWh). The POWR3 (R3 version) supports exporting historical consumption data. You can download a CSV file from the device's settings within the app, which contains timestamped data for detailed analysis in spreadsheet software.