Shelly SHSW-PM

1PM

Device type

Smart Switch

Max power

0.85 W

Standby power

0.589 W

View discovery and setup instructions for this profile.

Powercalc can discover this model automatically (by entity). Look for a discovery prompt in Home Assistant and accept it to create the sensors. About discovery

Through the interface (recommended)

Start the Powercalc config flow, choose Virtual power (library), and pick Shelly → SHSW-PM.

Open in Home Assistant

Add this to your configuration.yaml, replacing light.my_light with your own entity.

powercalc:
  sensors:
    - entity_id: light.my_light
      manufacturer: shelly
      model: SHSW-PM

Library sensor documentation

Community usage

82 opted-in installations

1.54% of 5,314 reporting installationsOpt in to analytics

Device

Manufacturer: Shelly
Description: Smart Wi-Fi Relay with Power Monitoring
Aliases: Shelly 1PM
Form factor: In Wall
Connectivity: Wi-Fi
Barcode: 3809511201985
Product page: shelly.com
Power monitoring: Yes

Power

Power range: 0.589 – 0.85 W
Rated power: 1 W claimed
Standby power on: 0.85 W

Measurement

Calculation strategy: Fixed
Measure device: Shelly PM Mini Gen3
Measure method: Manual
Measure description: The measured device fw: 1.14.1-rc1, Eco Mode enabled, Wifi Client enabled, LED disabled. The result represents the average value of measurements collected from the measurement device API for the following scenarios: dumb device/baseline consumption (~4.9W), the relay turned off, and the relay turned on.
Mains voltage: 230 V
Measure device firmware: 20241011-114503/1.4.4-g6d2a586
Measure settings: SAMPLE_COUNT: 200SLEEP_TIME: 0.5

Library

Created: Jan 9, 2024, 7:21 PM UTC
Updated: Sep 13, 2026, 9:41 AM UTC
Contributors: Michal Bartak
Discovery: Automatic, by entity
Only self usage: Yes

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Shelly SHSW-PM

1PM

Set up manually instead

Through the interface (recommended)

Or configure with YAML

Device

Power

Measurement

Library

Device

Power

Measurement

Library

1PM

Set up manually instead

Through the interface .css-bxmwoh{margin:0;font-family:"Roboto","Helvetica","Arial",sans-serif;font-weight:400;font-size:0.875rem;line-height:1.43;letter-spacing:0.01071em;}(recommended)

Or configure with YAML

Or configure with YAML

Device

Power

Measurement

Library

Device

Power

Measurement

Library

Through the interface (recommended)