Power measurement profileShelly
Plug S Gen3
Measuring the running watts and watt-hours of European plug-in appliances over a realistic cycle.
Official specification snapshot
Know the meter’s limit before the load.
AC voltage, current, power and energy
- Supply
- 220–230V AC · 50/60Hz
- Maximum current
- 12A
- Maximum output
- 2,500W · resistive only
- Metering
- Voltage, current, power and energy
Safe workflow
From connection to useful number.
- 01Confirm the appliance plug and supply voltage match
- 02Keep the load below the documented rating
- 03Record running watts and energy over a complete cycle
- 04Use the measured average in Runtime Lab
Evidence checked 2026-08-22
Open Shelly official specifications ↗Read the exact manufacturer instructions.
Product revisions, plugs and certifications can differ by country. Confirm the exact regional model in the official instructions; the documented limit always overrides this summary.