Ubisys C4 in Home Assistant

Buttons & remotes · Zigbee · Control unit C4

Zigbee2MQTT Quirk included in ZHA 1 open report

This device is known to both Zigbee integrations: Zigbee2MQTT has a definition for it, and ZHA has a quirk that adapts it.

We have a detailed page on this device with compatibility ratings and prices. Details and compatibility

Brand: Ubisys
Model: C4
Device type: Buttons & remotes
Radio: Zigbee
Reports itself as: C4 (5504)
Zigbee2MQTT: Device page on zigbee2mqtt.io

Where to buy

ubisys

ubisys C4 Bedieneinheit mit Zigbee und Bluetooth, konfigurierbar ohne Gateway, verknüpfbar mit anderen ubisys Komponenten zur Steuerung von Leuchten und Jalousien

1 offer

Offers for ubisys C4 Bedieneinheit mit Zigbee und Bluetooth, konfigurierbar ohne Gateway, verknüpfbar mit anderen ubisys Komponenten zur Steuerung von Leuchten und Jalousien, best price first, then sorted by total price
Shop	Offer	Price	Shipping	Delivery	Go to shop
	ubisys Bedieneinheit C4 (Series 2): Zigbee + Bluetooth \| Zigbee Direct Device \| Ohne Gateway konfigurierbar \| Verknüpfbar mit anderen ubisys Komponenten, um z. B. Leuchten und Jalousien zu steuern.	Price out of date		Nur noch 12 auf Lager	Check current price at Amazon.de

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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. Source

Known problems and fixes

Requests for ZHA support

support requested Someone asked ZHA to support this device or one of its functions. since 2026年8月20日 · zha-device-handlers #5267

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)

2 more quirks for this device

Quirk proposed, not merged yet ubisys / C4 (5504) zha-device-handlers · pull request #5482 · by @zigpy-review-bot · 2026年10月20日
Custom quirk shared in an issue ubisys / C4 (5504) zha-device-handlers · issue #5267 · by @nielstron · 2026年8月20日

All quirks in the ZHA quirk database →

Alternatives

The same job from other makers – devices of the same type and radio that work with Home Assistant too.

Nedis ZBRC10WT Buttons & remotes · Zigbee, Wi-Fi · Security remote control Zigbee2MQTT Tuya Local (HACS) Custom quirk needed Review
Aqara WXKG11LM Buttons & remotes · Zigbee · Wireless mini switch Zigbee2MQTT ZHA quirk 3 open reports Review
Philips 929003017102 Buttons & remotes · Zigbee · Hue wall switch module Zigbee2MQTT ZHA quirk 3 open reports Review
Innr RC 250 Buttons & remotes · Zigbee · Remote control Zigbee2MQTT 1 open report Review