GE Cync

cloudProven against a real device on 2026-09-04by ALYT

Cync bulbs, dimmers, switches and plugs, through Cync’s cloud with your account.

What it adds to a house

adds lights and switches.

How a person connects it

Method: signIn. Sign in with the Cync account; Cync then emails a code, which is asked for next. The password is used once and never kept. A local route (the router change the guide describes) comes later.

Field	Kind	Required
Cync account email (`email`)	email	yes
Cync account password (`password`)	password, secret	yes

What it can look for

Yes: “Look for Cync devices”.

What stops working when it is disconnected

The things it brought stop answering until it is connected again.

The descriptor

The same object the console and the phone render from, served for a program at /connectors/cync.json.

{
  "source": "built-in",
  "visibility": "public",
  "listed": true,
  "version": "1.0.0",
  "docsUrl": "https://developers.alyt.com/connectors/cync",
  "kind": "CYNC",
  "name": "GE Cync",
  "icon": "lamp",
  "promise": "Cync bulbs, dimmers, switches and plugs, through Cync's cloud with your account.",
  "connectivity": "cloud",
  "brings": [
    "light",
    "switch"
  ],
  "connect": {
    "method": "signIn",
    "help": "Sign in with the Cync account; Cync then emails a code, which is asked for next. The password is used once and never kept. A local route (the router change the guide describes) comes later.",
    "fields": [
      {
        "key": "email",
        "label": "Cync account email",
        "kind": "email",
        "secret": false,
        "required": true
      },
      {
        "key": "password",
        "label": "Cync account password",
        "kind": "password",
        "secret": true,
        "required": true
      }
    ]
  },
  "discovery": {
    "verb": "Look for Cync devices"
  },
  "disconnect": {
    "consequence": "{count} {things} stop answering until it is connected again."
  },
  "author": {
    "kind": "alyt",
    "name": "ALYT",
    "url": "https://alyt.com"
  },
  "verification": {
    "level": "proven",
    "at": "2026-09-04T01:35:00.000Z"
  }
}

The guide

GE Cync connects ALYT to Cync bulbs, dimmers, switches, and plugs through Cync’s cloud account sign-in. A household uses its own Cync email and password, then enters the emailed code Cync sends. The connector exposes lights and switches, and the house keeps working when the cloud is down, but this connector depends on Cync’s cloud for reads and writes. A DEV key acts in a sandbox, and a LIVE key works only for its own connector.

Connect

The connect flow uses signIn in two steps. First, a household enters the Cync account email and password. Then Cync emails a code to that address, and the household enters that code in the second step.

The password is used once during sign-in and is not kept. The code is time-limited and applies to the sign-in that requested it. If the session expires or Cync revokes it, the connector needs a new sign-in.

What the developer should expect:

Cync may ask for the emailed code after the first step.
Discovery reads the account’s homes and devices again.
This connector is cloud-based; it does not use a local route yet.

What it brings

This connector brings devices into ALYT as:

light for bulbs, strips, and dimmers, including power, dimming, colour temperature, and colour as each device reports
switch for plugs and switches

Not every Cync device is representable here. If Cync shows a device type that is not a light, plug, or switch, ALYT lists it in discovery and skips it.

Discovery

Discovery is “Look for Cync devices.” It re-reads the account’s homes and devices from Cync and maps the devices into the household rooms Cync reports.

A household may see the same room names Cync uses, and moving devices between rooms in Cync changes what discovery returns. If a home has many devices, discovery may refresh the token before reading again.

State and control

This connector exposes current state for the devices it brings in, and it accepts control for supported lights and switches.

Supported light controls include:

power
dim level
colour temperature
RGB colour where the device reports it

For switches and plugs, the available control is power state.

The state you read comes from Cync’s own reporting. A device may appear offline or return less detail if it is not reachable through the account’s cloud-linked view of the home.

What it cannot do

It cannot use a local-only path yet.
It cannot control or model device types that are not lights, plugs, or switches.
It cannot keep using a session forever; sign-in may be needed again.
It cannot make a device report more capability than Cync exposes for that device.

When it fails

Check these first:

The Cync email address and password are correct.
The emailed code was entered for the same sign-in attempt that requested it.
The account can still reach its homes and devices in Cync.
The device is one of the supported kinds and is part of the account’s listed homes.
The session has not expired.

If discovery returns fewer devices than expected, the household may still be using Cync rooms that have not been refreshed in ALYT yet. If control fails, check whether the device is online in Cync and whether the account still has access to that home.

Last updated September 4, 2026