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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.

  1. 01Confirm the appliance plug and supply voltage match
  2. 02Keep the load below the documented rating
  3. 03Record running watts and energy over a complete cycle
  4. 04Use the measured average in Runtime Lab
Evidence checked 2026-08-22

Read the exact manufacturer instructions.

Product revisions, plugs, certifications and availability can differ by country. The official limit always overrides this summary.

Open Shelly official specifications ↗
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