# \[APP\] Shelly - Smart solutions for every home and office

**URL:** <https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765>\
**Category:** Apps\
**Tags:** app, official, homey, homey-pro, homey-cloud\
**Created:** [August 28, 2018, 8:54pm UTC](https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765 "2018-08-28T20:54:43Z")\
**Posts on this page:** 1\
**Showing post:** 4238

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**Author:** ![Phuturist](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/phuturist/32/49_2.png) [@Phuturist](https://community.homey.app/u/Phuturist)\
**Post date:** [September 30, 2023, 10:20am UTC](https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765/4238 "2023-09-30T10:20:32Z")

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I’m not using Homey myself so I don’t have any experience with this. I can only explain how it’s implemented in the Shelly app.

The only documentation on how this works from the app perspective can be found [here](https://apps.developer.homey.app/the-basics/devices/energy#measuring-devices). The Shelly app has implemented this and marks all three channels of the Pro 3EM as a cumulative device. How this affects the various energy capabilities of the Pro 3EM and what happens within the Homey Energy tab based on this setting is unknown to me. Perhaps a developer that uses Homey himself or Athom can shed more light on this.

Here is how the 3 channels of the Pro 3EM are implemented.

- **Channel 1**
  - measure\_power: measures the power for this channel
  - meter\_power: measures the total energy for this channel
  - meter\_power.returned: measures the total energy returned for this channel
  - meter\_power.total: measures the total energy **for all 3 channels**
  - meter\_power\_total\_returned: measures the total energy returned **for all 3 channels**

- **Channel 2**
  - measure\_power: measures the power for this channel
  - meter\_power: measures the total energy for this channel
  - meter\_power.returned: measures the total energy returned for this channel

- **Channel 3**
  - measure\_power: measures the power for this channel
  - meter\_power: measures the total energy for this channel
  - meter\_power.returned: measures the total energy returned for this channel

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_[View the full topic](https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765)._