# GE Cync Button Dimmer Switch (Matter)

*GE Cync / CSWDMBLK3T1*

> The Cync Button Dimmer Switch (Matter) is a neutral-wire dimmer switch with a button style face. It supports Matter with HomeKit, Alexa, Google Home and SmartThings, and also works in the Cync app. It suits HomeKit, Google Home, Alexa, SmartThings and Home Assistant users, with native support through Matter over Wi-Fi.

- Canonical page: https://smarthomecanon.com/devices/cync-button-dimmer-matter
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [GE Cync](https://smarthomecanon.com/brands/cync) |
| Category | Switch |
| Model numbers | CSWDMBLK3T1 |
| Status | Current[^1][^2] |
| Connection | Matter over Wi-Fi[^2] |
| Matter | withheld |
| HomeKit | HomeKit via Matter[^2] |
| Connectivity | Bluetooth, Matter, Wi-Fi[^2] |
| Type | Dimmer[^2] |
| Neutral wire | Required[^2] |

## Integration paths

**How the GE Cync Button Dimmer Switch (Matter) connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter / Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) | 2.4 GHz Wi-Fi network, Matter-compatible app[^2] | unknown | unknown |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | 2.4 GHz Wi-Fi network, Cync app[^2] | unknown | unknown |

**Platform support for the GE Cync Button Dimmer Switch (Matter)**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter / Wi-Fi | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Native[^2] |  |
| Matter / Wi-Fi | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Native[^2] |  |
| Matter / Wi-Fi | [Google Home](https://smarthomecanon.com/platforms/google-home) | Native[^2] |  |
| Matter / Wi-Fi | [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) | Native[^2] |  |
| Matter / Wi-Fi | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld |  |
| Matter / Wi-Fi | [Homey](https://smarthomecanon.com/platforms/homey) | withheld |  |
| Wi-Fi cloud | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Native[^2] |  |
| Wi-Fi cloud | [Google Home](https://smarthomecanon.com/platforms/google-home) | Native[^2] |  |
| Wi-Fi cloud | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | Proxy-alt/cync-lan |

## Related pages

- [Cync wall switches and dimmers](https://smarthomecanon.com/lines/cync-switches-and-dimmers) (line)
- [GE Cync](https://smarthomecanon.com/brands/cync) (brand)
- [Matter over Wi-Fi](https://smarthomecanon.com/protocols/matter-wifi) (protocol)
- [Wi-Fi through a cloud service](https://smarthomecanon.com/protocols/wifi-cloud) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [Google Home](https://smarthomecanon.com/platforms/google-home) (platform)
- [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) (platform)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: GE Lighting: Cync smart home products. https://www.gelighting.com/smart-home (manufacturer, checked 2026-10-16)
[^2]: GE Cync Smart Button Dimmer Light Switch, Neutral Wire + Traveler Required, Bluetooth and 2.4 GHz Wi-Fi, Works with Alexa and Google Home - GE Lighting. https://www.gelighting.com/led-lights/bulbs/ge-cync-smart-button-dimmer-light-switch-neutral-wire-traveler-required-bluetooth (manufacturer, checked 2026-10-16)