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Home Assistant TestFlight
Energy

P1 Monitor

p1_monitor

Built inLocal polling

The P1 Monitor integration allows you to gather data from your P1 Monitor device and use it in Home Assistant.

In Apple Home through HomeKit Bridge

What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.

EntityShows up asNote
sensorSensor (air quality)

What people report

P1 Monitor smart meter readers work locally; a 2022 failure occurred when no water meter was connected.

  • Works1
DeviceIn Home AssistantIn Apple HomeWhat they saidSource
P1 MonitorWorks LocalPower and water meter sensors; no-water-meter timeout reported in 2022
Saved copy
Breaking change Because I changed the way of creating entities in `sensor.py`, entity_id has added a service name. ## Proposed change <!-- Describe the big picture of your changes here to commun

Excerpt saved from GitHub on 2026-10-23.

PR #74004 · 2022-06

Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.

How it connects

Local polling

Talks to the device on your network, asking it for updates every so often.

Details

Installs (analytics)342 (0.05%)
Added inHome Assistant 2021.9
Set up in the UIYes
Maintainers@klaasnicolaas

In ReReHome

Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.

Bridges get their own settings page listing the accessories behind them.