Amazon B7W644

Echo Dot (Gen4) with clock

Device type

Smart Speaker

Max power

4.03 W

Standby power

1.05 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 Amazon → B7W644.

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: amazon
      model: B7W644

Library sensor documentation

Community usage

77 opted-in installations

1.46% of 5,273 reporting installationsOpt in to analytics

Device

Manufacturer: Amazon
Aliases: A2H4LV5GIZ1JFT
Form factor: Speaker
Connectivity: Wi-Fi, Bluetooth
Barcode: 840080504636
+3 more

Power

Power range: 1.2 – 4.03 W

Measurement

Calculation strategy: Linear
Measure device: Nous A1T
Measure method: Script
Measure description: Measured with utils/measure script
Mains voltage: 230 V
Measure settings: SAMPLE_COUNT: 2SLEEP_TIME: 3VERSION: v1.20.1:docker

Library

Created: Jan 6, 2026, 4:03 PM UTC
Updated: Aug 31, 2026, 12:33 PM UTC
Contributors: Jarod2801
Discovery: Automatic, by entity

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Amazon B7W644

Echo Dot (Gen4) with clock

Set up manually instead

Through the interface (recommended)

Or configure with YAML

Device

Power

Measurement

Library

Device

Power

Measurement

Library

Echo Dot (Gen4) with clock

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)