Ubisys C4 in Home Assistant
Buttons & remotes · Zigbee · Control unit C4
This device is known to both Zigbee integrations: Zigbee2MQTT has a definition for it, and ZHA has a quirk that adapts it.
Facts about this device
- Brand
- Ubisys
- Model
- C4
- Device type
- Buttons & remotes
- Radio
- Zigbee
- Reports itself as
- C4 (5504)
- Zigbee2MQTT
- Device page on zigbee2mqtt.io
Where to buy
How the device gets into Home Assistant
- official ZHA – with a Zigbee coordinator and the ZHA integration; the quirk the device needs is part of ZHA.
- add-on Zigbee2MQTT – Zigbee2MQTT runs as an add-on and passes the device on to Home Assistant over MQTT.
Known problems and fixes
Requests for ZHA support
- support requested Someone asked ZHA to support this device or one of its functions.
ZHA quirks for this device
Quirk included in ZHA Recommended quirk
Part of ZHA – Home Assistant uses it on its own, nothing to install.
Adds: Input mode 1 Input mode 2 Input mode 3 Input mode 4
Source:
zha-device-handlers · since zha-quirks 2.2.2
Signature: ubisys / C4 (5504)
1 more quirk for this device
-
Custom quirk shared in an issue
ubisys/C4 (5504)zha-device-handlers · issue #5267 · by @nielstron · 2026年8月20日
Sources: Zigbee2MQTT, ZHA quirks, Z-Wave JS, the Matter certification database, Shelly, ESPHome, Tasmota, Tuya Local and the issue trackers on GitHub. Reports are assigned to a device by the identifiers they contain; the sentences come from the integration pages, where a language model writes them from the titles.