
Smart Power Meter Switch 16A | Sonoff POWR316
The SONOFF POWR316 (POW Origin) is a Wi-Fi smart switch with a built-in power meter. It is wired in line with an appliance or circuit, lets you switch it on and off from your phone, and shows how much power it uses in real time. It works on 100-240V AC and handles loads up to 16A.


Real-time power monitoring: The POWR316 measures the power, current and voltage of the connected load, as well as the total energy consumed. You see the readings live in the eWeLink app, so you know how much electricity a heater or other appliance is actually using.
Loads up to 16A: With a 16A maximum load, it suits higher-power appliances such as heaters and lighting systems, not only small devices.
6 months of energy history: The app keeps hourly power consumption data for the past 6 months, and you can export it to Excel (.xlsx). This helps you compare usage between days or months and spot appliances that use more than expected.
Overload protection: You can set limits for power, voltage and current. If a limit is exceeded, the POWR316 switches the power off automatically to protect the connected appliance.
Smart switch features: Remote control from the app, schedules, inching mode and power-on state memory (choosing the state after a power cut) are all included. It also works with Amazon Alexa and Google Assistant for voice control.
Good to know
The POWR316 works with 2.4 GHz Wi-Fi only. This model has no display: readings are shown in the eWeLink app. It is wired into mains power, so installation should be done by a qualified electrician with the power switched off.
Technical Specifications
| Model | POWR316 (POW Origin) |
| Input/Output | 100-240V~ 50/60Hz 16A Max |
| Measurements | Power, current, voltage, energy consumption |
| Energy History | 6 months, hourly, exportable to Excel |
| Wi-Fi | IEEE 802.11 b/g/n 2.4 GHz |
| App | eWeLink |
| Voice Assistants | Amazon Alexa, Google Assistant |
| Casing Material | PC V0 |
| Dimensions | 98 x 54 x 31 mm |
| Color | White |
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