Lighting

Cync

cync

Built inCloud push

The Cync integration is used to integrate with smart devices sold by GE Lighting. Cync, formerly known as "C by GE", is the name given to GE Lighting's line of smart devices.

Documentation Source code

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.

Entity	Shows up as	Note
`light`	Light

1 report below say how a device from this integration behaves in the Home app.

What people report

Cync lights work through the cloud; plugs and wired switches are not supported yet, with a plug PR still open. Effects, light shows and LED strip segments are missing.

Works2
Requested2

Device	In Home Assistant	In Apple Home	What they said	Source
Cync light bulbs and light strips	Works Cloud		Lights controllable; effects, light shows, music shows and segments unsupported Saved copy Limitations: The following lighting features are not yet supported: Dynamic effects Light shows Music shows LED strip segment control Cync servers only allow one instance of your account to connect at a time. If you open the Cync app while Home Assistant is running, the integration will briefly lose its connection. It will automatically reconnect after a 10 second waiting period. Excerpt saved from home-assistant.io on 2026-10-23.	Docs
CYNC reveal HD+ undercabinet fixture	Works Cloud	Works in Home Home app scenes now turn light on with color and brightness	Fixed after report; scene sent all parameters in one request Saved copy The problem CYNC reveal HD+ Smart Undercabinet Fixtures not working in HomeKit Scenes. I added it as Matter, it worked. When I removed it and added it into Cync app and sync with HA and added HomeKit. On/Off (Group On/Off), Color changing works but when I added it to Scenes and set brightness/color, it will not turn on. Oddly, if it is already on and changing scenes, it works but once it is turned off and attempting to turn it on via Scenes it will not work. (Tried to restart the fixtures, HA, Sign in and out with CYNC), nothing works. There is no error in logs. ### What version of Home … Excerpt saved from GitHub on 2026-10-23.	Issue #155888 · 2025-11
Cync smart plugs and outlets	Requested Cloud		Plug support PR open, depends on pycync 0.6.1 Saved copy Proposed change Extends the Cync integration to expose smart plugs and outlets as Home Assistant switch entities with the outlet device class. Depends on #179013, which updates pycync from 0.5.0 to 0.6.1. That release adds `CyncPlug`, public power-control methods, state parsing, and independent ro Excerpt saved from GitHub on 2026-10-23.	PR #174302 · 2026-06
Cync wired switches (no neutral)	Requested Cloud		Only lights supported; switches planned by contributor Saved copy The problem Removed the HACS Cync integration in favor of the new 'standard' one. This is in the log: Detected blocking call to load_default_certs with args ( , ) in /usr/local/lib/python3.13/ssl.py, line 722: context.load_default_certs(purpose) inside the event loop; This is causing stability issues. Please create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#load_default_certs Traceback (most recent call last): File " ", line 198, in _run_module_as_main … Excerpt saved from GitHub on 2026-10-23.	Issue #153460 · 2025-10

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

Cloud push

Goes through the maker’s cloud, which sends updates as they happen. Needs the internet and an account.

Details

Installs (analytics)	1,275 (0.18%)
Quality scale	Bronze
Added in	Home Assistant 2025.10
Set up in the UI	Yes
Maintainers	@Kinachi249

Limitations from the docs

The following lighting features are not yet supported:
Dynamic effects
Light shows
Music shows
LED strip segment control
Cync servers only allow one instance of your account to connect at a time. If you open the Cync app while Home Assistant is running, the integration will briefly lose its connection. It will automatically reconnect after a 10 second waiting period.

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.